US4781707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for collecting blood from a body cavity for autotransfusion
Assignee: Boehringer Laboratories Inc
•
Filing: 1986-09-12
•
Granted: 1988-11-01
•
Expires: 2006-09-12
Abstract
Abstract A process for the collection of blood from a body cavity requires a controllable flow conduit having an inlet and an outlet. The inlet of the conduit is placed in a body cavity from which blood is to be withdrawn. The outlet of the conduit is connected to the inlet of a blood collection apparatus. The apparatus includes an apparatus body having a first opening therein for connection to a source of suction and a gas-transmitting water seal. The apparatus also includes an autotransfusion collector for collecting and storing blood for optional blood reuse. The collector includes an outer receptacle and an inner receptacle. The inner receptacle includes at least one interior cavity and at least one substantially flexible wall at least partially enclosing the at least one interior cavity. The apparatus also includes a conduit for placing the source of suction in fluid communication with the interior cavity through the water seal. An inlet conduit communicates with the interior cavity and the body cavity for carrying blood to the inner receptacle when suction is applied to the first opening in the apparatus body. Preferably, the outer receptacle is substantially rigid and the collector further includes at least one intermediate cavity between the outer receptacle and the inner receptacle. In a preferred embodiment the intermediate cavity is sealed against fluid communication with the atmosphere.
Inventors
- 👤 John R. Boehringer
- 👤 John Karpowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:43
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/60; A61M1/61
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
111 words
A method of collection of blood for reuse thereof comprising: (a) providing a receptacle having a fluid filter therein for receiving blood in an interior thereof; (b) providing support means for said receptacle; (c) arranging said receptacle within said support means so as to provide a zone defined between said receptacle and said support means; (d) maintaining said zone (i) hermetically sealed from the atmosphere and from the source of vacuum and (ii) hermetically sealed from the interior of said receptacle; (e) delivering blood to said receptacle through an inlet thereof; and (f) applying a source of vacuum to said receptacle to draw blood through said filter and into said receptacle.
Claim 2
Independent Claim
111 words
A method of collection of blood for reuse thereof comprising: (a) providing a receptacle having a fluid filter therein for receiving blood in an interior thereof; (b) providing support means for said receptacle; (c) arranging said receptacle within said support means so as to provide a zone defined between said receptacle and said support means; (d) maintaining said zone (i) hermetically sealed from the atmosphere and from the source of vacuum and (ii) hermetically sealed from the interior of said receptacle; (e) delivering blood to said receptacle through an inlet thereof; and (f) applying a source of vacuum to said receptacle to draw blood through said filter and into said receptacle.
Claim 3
Dependent Claim
23 words
The method of claim 1, including the step of venting the zone to atmosphere for removal of the receptacle from the support means.
Claim 4
Dependent Claim
14 words
The method of claim 1, including sensing, displaying and controlling the vacuum during use.
Claim 5
Dependent Claim
112 words
Apparatus for the collection of blood for reuse thereof comprising: (a) a receptacle for receiving blood in an interior thereof; (b) support means for said receptacle; (c) a zone defined between said receptacle and said support means; (d) means maintaining said zone (i) hermetically sealed from the atmosphere and from the source of vacuum and (ii) hermetically sealed from the interior of said receptacle; (e) an inlet to said receptacle for the delivery of blood therethrough; (f) means for applying a source of vacuum to the apparatus to draw blood through a said filter and into said receptacle; and (g) a filter as part of the apparatus for filtering blood drawn therethrough.
Claim 6
Dependent Claim
112 words
Apparatus for the collection of blood for reuse thereof comprising: (a) a receptacle for receiving blood in an interior thereof; (b) support means for said receptacle; (c) a zone defined between said receptacle and said support means; (d) means maintaining said zone (i) hermetically sealed from the atmosphere and from the source of vacuum and (ii) hermetically sealed from the interior of said receptacle; (e) an inlet to said receptacle for the delivery of blood therethrough; (f) means for applying a source of vacuum to the apparatus to draw blood through a said filter and into said receptacle; and (g) a filter as part of the apparatus for filtering blood drawn therethrough.
Claim 7
Dependent Claim
27 words
The apparatus of claim 4, wherein a plurality of collection receptacles with inlets are provided, with means for selectively switching the delivery of blood among said inlets.
Claim 8
Dependent Claim
13 words
The apparatus of claim 4, wherein said filter is located within said receptacle.
Claim 9
Dependent Claim
14 words
The apparatus of claim 4, wherein said receptacle is disposed within said support means.
Claim 10
Dependent Claim
17 words
The apparatus of claim 4, wherein said receptacle and said support means are separable from each other.
Claim 11
Dependent Claim
24 words
The apparatus of claim 4, including means for venting said zone to the atmosphere for facilitating removal of said receptacle from said support means.
Claim 12
Dependent Claim
17 words
The apparatus of claim 4, including means for compressing said receptacle for facilitating discharge of blood therefrom.
Claim 13
Dependent Claim
20 words
The apparatus of claim 10, wherein said means for compressing comprise bladder means and means for inflating said bladder means.
Claim 14
Dependent Claim
24 words
The apparatus of claim 4, with the apparatus further including a vacuum monitoring means for sensing, controlling and displaying the vacuum drawn during use.
Claim 15
Dependent Claim
12 words
The apparatus of claim 4, wherein said support means is substantially rigid.
Claim 16
Dependent Claim
30 words
The apparatus of claim 13, wherein said receptacle includes a substantially rigid cap and a substantially flexible, generally tubular bag, one end of which is hermetically sealed to said cap.
Claim 17
Dependent Claim
36 words
The apparatus of claim 4, wherein vacuum control means is provided with said means for applying a source of vacuum, and with a sealing means being operatively located between said vacuum control means and said receptacle.
Claim 18
Dependent Claim
13 words
The apparatus of claim 15, wherein said vacuum control means is a manometer.
Claim 19
Dependent Claim
13 words
The apparatus of claim 15, wherein said sealing means comprises a water seal.
Claim 20
Dependent Claim
20 words
The apparatus of claim 15, wherein at least one collection chamber is provided between said receptacle and said sealing means.
Claim 21
Dependent Claim
29 words
The apparatus of claim 18, wherein said vacuum control means, said sealing means and said at least one collection chamber comprise a unit, detachably connectible to said support means.
Claim 22
Dependent Claim
23 words
The apparatus of claim 15, wherein said vacuum control means and said sealing means comprise a unit detachably connectible to said support means.
Claim 23
Dependent Claim
28 words
The apparatus of claim 19, wherein said vacuum control means, said sealing means, said at least one collection chamber, and said receptacle support means comprise an integral unit.
Claim 24
Dependent Claim
22 words
The apparatus of claim 15, wherein said vacuum control means, said sealing means and said receptacle support means comprise an integral unit.
Claim 25
Independent Claim
144 words
A method of collecting blood and certain other body fluids, comprising the steps of: (a) providing a vacuum opening component connected to a source of suction; (b) providing a support component having a flexible collection receptacle therein for receiving blood; (c) providing sealing means that permits gas to be transmitted therethrough, with one side of said sealing means in communication with said vacuum opening and with the other side in communication with said flexible collection receptacle within said support component; (d) delivering blood or certain other body fluids to an inlet of said receptacle; (e) filtering the blood or other fluids as it enters the receptacles; (f) applying a vacuum from said source to draw blood or other fluids into said receptacle; and (g) maintaining said support component outside said flexible collection receptacle hermetically sealed from communication with atmosphere and said source of suction.
Claim 26
Independent Claim
144 words
A method of collecting blood and certain other body fluids, comprising the steps of: (a) providing a vacuum opening component connected to a source of suction; (b) providing a support component having a flexible collection receptacle therein for receiving blood; (c) providing sealing means that permits gas to be transmitted therethrough, with one side of said sealing means in communication with said vacuum opening and with the other side in communication with said flexible collection receptacle within said support component; (d) delivering blood or certain other body fluids to an inlet of said receptacle; (e) filtering the blood or other fluids as it enters the receptacles; (f) applying a vacuum from said source to draw blood or other fluids into said receptacle; and (g) maintaining said support component outside said flexible collection receptacle hermetically sealed from communication with atmosphere and said source of suction.
Claim 27
Dependent Claim
24 words
The method of claim 23, including the step of monitoring and controlling the vacuum drawn through the vacuum opening, by means of a manometer.
Claim 28
Dependent Claim
89 words
Apparatus for collection of blood for reuse thereof, comprising: (a) a vacuum opening component for connection to a source of suction; (b) a flexible collection receptacle having a fluid filter in fluid communication therewith; (c) gas-transmitting sealing means with one side in communication with said vacuum opening and the other side in communication with said flexible collection receptacle for receiving and collecting blood through said filter, and with means maintaining said support component outside said flexible collection receptacle hermetically sealed from communication with atmosphere and said source of suction.
Claim 29
Dependent Claim
89 words
Apparatus for collection of blood for reuse thereof, comprising: (a) a vacuum opening component for connection to a source of suction; (b) a flexible collection receptacle having a fluid filter in fluid communication therewith; (c) gas-transmitting sealing means with one side in communication with said vacuum opening and the other side in communication with said flexible collection receptacle for receiving and collecting blood through said filter, and with means maintaining said support component outside said flexible collection receptacle hermetically sealed from communication with atmosphere and said source of suction.
Claim 30
Dependent Claim
29 words
The apparatus of claim 25, including a manometer constructed as a component of the same single integral unit, for monitoring and controlling the vacuum drawn through the vacuum opening.
Claim 31
Dependent Claim
34 words
The apparatus of claim 25, including at least one chamber in addition to said collection receptacle support component, to collect blood, said chamber being in communication with said other side of said sealing means.
Claim 32
Dependent Claim
14 words
The apparatus of claim 25, wherein said receptacle is disposed within said support means.
Claim 33
Dependent Claim
17 words
The apparatus of claim 25, wherein said receptacle and said support means are separable from each other.
Claim 34
Dependent Claim
13 words
The apparatus of claim 25, including means for venting said zone to atmosphere.
Claim 35
Dependent Claim
17 words
The apparatus of claim 25, including means for compressing said receptacle for facilitating discharge of blood therefrom.
Claim 36
Dependent Claim
21 words
The apparatus of claim 25, wherein said means for compressing comprise a bladder means and means for inflating said bladder means.
Claim 37
Dependent Claim
30 words
The apparatus of claim 25, wherein the receptacle includes a substantially rigid cap and a substantially flexible, generally tubular bag, one end of which is hermetically sealed to said cap.
Claim 38
Dependent Claim
17 words
The apparatus of claim 25, including means for adding a reagent to said receptacle through said filter.
Claim 39
Dependent Claim
30 words
The apparatus of claim 25, including other sealing means in fluid connection with said apparatus, for preventing flow of liquid from other locations in said apparatus into said collection receptacle.
Claim 40
Dependent Claim
28 words
The apparatus of claim 25, wherein a plurality of collection receptacles with inlets are provided, and having means for selectively switching the delivery of blood among said inlets.
Claim 41
Dependent Claim
115 words
Apparatus for the collection of certain body fluids comprising: (a) a receptacle for receiving body fluids in an interior thereof; (b) a support means for the receptacle; (c) a filter for fluid entering the receptacle and means for adding a reagent to the receptacle through the filter; (d) a zone defined between the receptacle and support means; (e) means maintaining said zone (i) hermetically sealed against atmosphere; and from the source of vacuum and (ii) hermetically sealed from the interior of the receptacle; (f) an inlet to the receptacle for the delivery of body fluids therethrough; and (g) means for applying a source of vacuum to the apparatus to draw body fluids into the receptacle.
Claim 42
Dependent Claim
115 words
Apparatus for the collection of certain body fluids comprising: (a) a receptacle for receiving body fluids in an interior thereof; (b) a support means for the receptacle; (c) a filter for fluid entering the receptacle and means for adding a reagent to the receptacle through the filter; (d) a zone defined between the receptacle and support means; (e) means maintaining said zone (i) hermetically sealed against atmosphere; and from the source of vacuum and (ii) hermetically sealed from the interior of the receptacle; (f) an inlet to the receptacle for the delivery of body fluids therethrough; and (g) means for applying a source of vacuum to the apparatus to draw body fluids into the receptacle.
Claim 43
Dependent Claim
117 words
Apparatus for the collection of certain body fluids comprising: (a) a receptacle for receiving body fluids in an interior thereof; (b) a support means for the receptacle; (c) a zone defined between the receptacle and support means; (d) means maintaining said zone (i) hermetically sealed against atmosphere; and from the source of vacuum and (ii) hermetically sealed from the interior of the receptacle; (e) an inlet to the receptacle for the delivery of body fluids therethrough; (f) means for applying a source of vacuum to the apparatus to draw body fluids into the receptacle; and (g) a bladder means and means for inflating said bladder means for compressing said receptacle and facilitating discharge of body fluids therefrom.
Claim 44
Dependent Claim
117 words
Apparatus for the collection of certain body fluids comprising: (a) a receptacle for receiving body fluids in an interior thereof; (b) a support means for the receptacle; (c) a zone defined between the receptacle and support means; (d) means maintaining said zone (i) hermetically sealed against atmosphere; and from the source of vacuum and (ii) hermetically sealed from the interior of the receptacle; (e) an inlet to the receptacle for the delivery of body fluids therethrough; (f) means for applying a source of vacuum to the apparatus to draw body fluids into the receptacle; and (g) a bladder means and means for inflating said bladder means for compressing said receptacle and facilitating discharge of body fluids therefrom.
Claim 45
Dependent Claim
121 words
Apparatus for the collection of certain body fluids comprising: (a) a receptacle for receiving body fluids in an interior thereof; (b) a support means for the receptacle; (c) a zone defined between the receptacle and support means; (d) means maintaining said zone (i) hermetically sealed against atmosphere; and and from the source of vacuum (ii) hermetically sealed from the interior of the receptacle; (e) an inlet to the receptacle for the delivery of body fluids therethrough; and (f) means for applying a source of vacuum to the apparatus to draw body fluids into the receptacle wherein said support means are comprised of collapsible membrane means, with means facilitating the inflation of said support means for the performance of its supporting function.
Claim 46
Dependent Claim
121 words
Apparatus for the collection of certain body fluids comprising: (a) a receptacle for receiving body fluids in an interior thereof; (b) a support means for the receptacle; (c) a zone defined between the receptacle and support means; (d) means maintaining said zone (i) hermetically sealed against atmosphere; and and from the source of vacuum (ii) hermetically sealed from the interior of the receptacle; (e) an inlet to the receptacle for the delivery of body fluids therethrough; and (f) means for applying a source of vacuum to the apparatus to draw body fluids into the receptacle wherein said support means are comprised of collapsible membrane means, with means facilitating the inflation of said support means for the performance of its supporting function.
Claim 47
Dependent Claim
123 words
Apparatus for the collection of certain body fluids comprising: (a) a receptacle for receiving body fluids in an interior thereof; (b) a support means that is substantially rigid for the receptacle; (c) a zone defined between the receptacle and support means; (d) means maintaining said zone (i) hermetically sealed against atmosphere; and from the source of vacuum (ii) hermetically sealed from the interior of the receptacle; (e) an inlet to the receptacle for the delivery of body fluids therethrough; and (f) means for applying a source of vacuum to the apparatus to draw body fluids into the receptacle wherein the receptacle includes a substantially rigid cap and a substantially flexible, generally tubular bag, one end of which is hermetically sealed to the cap.
Claim 48
Dependent Claim
123 words
Apparatus for the collection of certain body fluids comprising: (a) a receptacle for receiving body fluids in an interior thereof; (b) a support means that is substantially rigid for the receptacle; (c) a zone defined between the receptacle and support means; (d) means maintaining said zone (i) hermetically sealed against atmosphere; and from the source of vacuum (ii) hermetically sealed from the interior of the receptacle; (e) an inlet to the receptacle for the delivery of body fluids therethrough; and (f) means for applying a source of vacuum to the apparatus to draw body fluids into the receptacle wherein the receptacle includes a substantially rigid cap and a substantially flexible, generally tubular bag, one end of which is hermetically sealed to the cap.
Claim 49
Dependent Claim
118 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of vacuum (ii) hermetically sealed from the receptacle.
Claim 50
Dependent Claim
118 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of vacuum (ii) hermetically sealed from the receptacle.
Claim 51
Dependent Claim
128 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of vacuum (ii) hermetically sealed from the receptacle; and wherein said receptacle is disposed within said support means.
Claim 52
Dependent Claim
128 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of vacuum (ii) hermetically sealed from the receptacle; and wherein said receptacle is disposed within said support means.
Claim 53
Dependent Claim
131 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of vacuum (ii) hermetically sealed from the receptacle. and wherein said receptacle and said support means are separable from each other.
Claim 54
Dependent Claim
131 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of vacuum (ii) hermetically sealed from the receptacle. and wherein said receptacle and said support means are separable from each other.
Claim 55
Dependent Claim
133 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of the vacuum (ii) hermetically sealed from the receptacle; and including means for compressing said receptacle for facilitating discharge of body fluids therefrom.
Claim 56
Dependent Claim
133 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of the vacuum (ii) hermetically sealed from the receptacle; and including means for compressing said receptacle for facilitating discharge of body fluids therefrom.
Claim 57
Dependent Claim
141 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of the vacuum (ii) hermetically sealed from the receptacle; and including bladder means and means for inflating said bladder means for compressing said receptacle for facilitating discharge of body fluids therefrom.
Claim 58
Dependent Claim
141 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas-transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of the vacuum (ii) hermetically sealed from the receptacle; and including bladder means and means for inflating said bladder means for compressing said receptacle for facilitating discharge of body fluids therefrom.
Claim 59
Dependent Claim
146 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas 0transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of the vacuum (ii) hermetically sealed from the receptacle; and wherein the receptacle includes a substantially rigid cap and a substantially flexible, generally tubular bag, one end of which is hermetically sealed to the cap.
Claim 60
Dependent Claim
146 words
Apparatus for collection of certain body fluids comprising: (a) a vacuum opening component for connection to a source of suction; (b) a collection receptacle support component; (c) a gas 0transmitting sealing means component, with one side in communication with said vacuum opening and the other side in communication with a flexible collection receptacle for receiving and collecting body fluids through an inlet thereof, with said support component, and with said components being constructed as components of a single integral unit wherein a zone is defined between said flexible collection receptacle support component and the receptacle disposed therein; with means maintaining said zone; (i) hermetically sealed against atmosphere; and from the source of the vacuum (ii) hermetically sealed from the receptacle; and wherein the receptacle includes a substantially rigid cap and a substantially flexible, generally tubular bag, one end of which is hermetically sealed to the cap.
References Cited (Backward Citations)
US3363626A
Cited
US3363627A
Cited
US3559647A
Cited
US3680560A
Cited
US3704709A
Cited
US3683913A
Cited
US3809085A
Cited
US3853128A
Cited
US3863634A
Cited
US3866608A
Cited
US4105031A
Cited
US4018224A
Cited
US4372336A
Cited
US4439190A
Cited
US4443220A
Cited
US4455141A
Cited
US4465483A
Cited
WO1984000489A1
Cited
US4519796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |