US3871037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incontinence pads
Assignee: Individual
•
Filing: 1974-01-04
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Granted: 1975-03-18
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Expires: 1994-01-04
Abstract
Abstract An incontinence pad is made up from several layers. Uppermost is a permeable membrane, followed in descending order by a thin absorbent layer, an impervious layer, a thick absorbent layer and a base impervious layer. The central impervious layer has a window therein to allow the majority of fluid to pass to the thick absorbent layer, which is preferably impregnated with a colloid.
Inventors
- 👤 Frederick Lane Willington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/48; A61F5/485; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/51121; A61F13/513; A61F13/51305; A61F13/53; A61F13/534; A61F13/537; A61F2013/53445; A61F2013/53765; A61F2013/53782
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
67 words
An incontinence pad comprising a permeable membrane, normally uppermost, an upper absorbent layer, an upper impervious layer, but with a window formed therein, the upper absorbent layer leaving said window exposed, a lower absorbent layer to which fluid has access through said window, a complete impervious layer, normally lowermost, and means sealing the edges of the pad the window being of lesser area than said absorbent layers.
Claim 2
Dependent Claim
67 words
An incontinence pad comprising a permeable membrane, normally uppermost, an upper absorbent layer, an upper impervious layer, but with a window formed therein, the upper absorbent layer leaving said window exposed, a lower absorbent layer to which fluid has access through said window, a complete impervious layer, normally lowermost, and means sealing the edges of the pad the window being of lesser area than said absorbent layers.
Claim 3
Dependent Claim
33 words
A pad as claimed in claim 1, wherein the sealing means comprise edge portions of the bottom impervious layer folded up and inwardly and bonded over the edge portions of the permeable membrane.
Claim 4
Dependent Claim
16 words
A pad as claimed in claim 1, wherein the pad is of substantially rectangular plan form.
Claim 5
Dependent Claim
20 words
A pad as claimed in claim 3, wherein said window is substantially central of one of the two longer sides.
Claim 6
Dependent Claim
19 words
A pad as claimed in claim 1, wherein at least the lower absorbant layer has a colloid impregnated therein.
Claim 7
Dependent Claim
22 words
A pad as claimed in claim 5, wherein the colloid is impregnated in a band across the pad and spanning said window.
Claim 8
Dependent Claim
13 words
A pad as claimed in claim 5, wherein said colloid is methyl cellulose.
Claim 9
Dependent Claim
19 words
A pad aS claimed in claim 1, wherein the upper absorbent layer is thinner than the lower absorbent layer.
Claim 10
Dependent Claim
17 words
A pad as claimed in claim 1, wherein the upper absorbent layer is of plied absorbent paper.
Claim 11
Dependent Claim
17 words
A pad as claimed in claim 1, wherein the lower absorbent layer is of plied absorbent paper.
Claim 12
Dependent Claim
16 words
A pad as claimed in claim 1, wherein the lower absorbent layer is of wood pulp.
Claim 13
Dependent Claim
15 words
A pad as claimed in claim 1, wherein said permeable membrane is of hydrophobic fabric.
Claim 14
Dependent Claim
15 words
A pad as claimed in claim 12, wherein said permeable membrane is of knitted polypropylene.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |