US4756311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwavable thermal compress and method of use thereof
Assignee: JACK FROST LABORATORIES Inc
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Filing: 1985-05-15
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Granted: 1988-07-12
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Expires: 2005-05-15
Abstract
Abstract Microwavable instant and/or cold pack gel package including an envelope fabricated from a laminate, for example, of films of synthetic resins and an aqueous gel in said envelope.
Inventors
- 👤 Sam E. Francis, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:27
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A61F2007/0242; F; F25; F25D; F25D2303/00; F25D2303/08; F25D2303/082; F25D2303/0822
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
167 words
A process of microwave heating a gel pack comprising the steps of: providing a gel pack comprising a completely sealed envelope constructed from opposed laminate layers portions of which are joined by sealed seams, said layers defining an inner chamber within which is disposed a gel that includes water, said chamber being sealed from the exterior of said gel pack, each of said laminate layers including a pair of co-extensive inner and outer films contacting each other throughout their surface areas, said films being of dissimilar materials; applying microwave energy of approximately full power of a microwave heating device to said gel pack for heating said gel to a desired temperature; and selecting the dissimilar materials so that the laminate layers of said gel pack do not pass steam produced during heating of said gel pack and do not rupture or separate at the seams thereof when subjected to said microwave energy for a period of time exceeding about two minutes but not exceeding about four minutes.
Claim 2
Dependent Claim
167 words
A process of microwave heating a gel pack comprising the steps of: providing a gel pack comprising a completely sealed envelope constructed from opposed laminate layers portions of which are joined by sealed seams, said layers defining an inner chamber within which is disposed a gel that includes water, said chamber being sealed from the exterior of said gel pack, each of said laminate layers including a pair of co-extensive inner and outer films contacting each other throughout their surface areas, said films being of dissimilar materials; applying microwave energy of approximately full power of a microwave heating device to said gel pack for heating said gel to a desired temperature; and selecting the dissimilar materials so that the laminate layers of said gel pack do not pass steam produced during heating of said gel pack and do not rupture or separate at the seams thereof when subjected to said microwave energy for a period of time exceeding about two minutes but not exceeding about four minutes.
Claim 3
Dependent Claim
15 words
A process as set forth in claim 1, wherein said dissimilar materials are synthetic resins.
Claim 4
Dependent Claim
14 words
A process as set forth in claim 1, wherein said inner film is polyethylene.
Claim 5
Dependent Claim
27 words
A process as recited in claim 2, wherein said dissimilar materials are synthetic resins and the outer film is nylon and the inner film is nylon sclair.
Claim 6
Dependent Claim
28 words
A process as set forth in claim 4, wherein the outer film has a thickness of one millimeter and the inner film has a thickness of two millimeters.
Claim 7
Dependent Claim
14 words
A process as set forth in claim 1, wherein said outer film is nylon.
Claim 8
Dependent Claim
28 words
A process as set forth in claim 6, wherein the outer film has a thickness of one mil and the inner film has a thickness of two mils.
Claim 9
Dependent Claim
146 words
A microwave gel pack comprising: a completely sealed envelope constructed from opposed laminate layers portions of which are joined by sealed seams, said layers defining an inner chamber within which is disposed a gel that includes water, said chamber being sealed from the exterior of said gel pack, each of said laminate layers including a pair of co-extensive inner and outer films contacting each other throughout their surface areas, said films being of dissimilar materials; and said dissimilar materials being selected so that the laminate layers of said gel pack do not pass steam produced during heating of the gel within said gel pack by microwave energy at approximately full power of a microwave heating device-and do not rupture or separate at the seams thereof when subjected to said microwave energy for a period of time exceeding about two minutes but not exceeding about four minutes.
Claim 10
Dependent Claim
146 words
A microwave gel pack comprising: a completely sealed envelope constructed from opposed laminate layers portions of which are joined by sealed seams, said layers defining an inner chamber within which is disposed a gel that includes water, said chamber being sealed from the exterior of said gel pack, each of said laminate layers including a pair of co-extensive inner and outer films contacting each other throughout their surface areas, said films being of dissimilar materials; and said dissimilar materials being selected so that the laminate layers of said gel pack do not pass steam produced during heating of the gel within said gel pack by microwave energy at approximately full power of a microwave heating device-and do not rupture or separate at the seams thereof when subjected to said microwave energy for a period of time exceeding about two minutes but not exceeding about four minutes.
Claim 11
Dependent Claim
36 words
An article of manufacture as set forth in claim 8, wherein said dissimilar materials are synthetic resinous films, or a paper layer adhered to a resinous layer or a fabric layer adhered to a resinous layer.
Claim 12
Dependent Claim
24 words
An article of manufacture as set forth in claim 9, wherein said resinous layer is selected from the group consisting of polyethylene and polyurethane.
Claim 13
Dependent Claim
35 words
An article of manufacture as set forth in claim 8, wherein the inner and outer films are of synthetic resins and the inner film is selected from the group consisting of polyethylene and nylon sclair.
Claim 14
Dependent Claim
16 words
An article of manufacture as set forth in claim 10, wherein said outer film is nylon.
Claim 15
Dependent Claim
32 words
An article of manufacture as set forth in claim 12, wherein the outer film has a thickness of about one mil and the inner film has a thickness of about two mils.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |