Patent US5419112A successfully refreshed from Google Patents.
Patent US4813944A successfully refreshed from Google Patents.
US4813944A
Expired / Lapsed
US
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Multipurpose disposable absorbent pad
Assignee: HANEY GLEN KYLE
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Filing: 1988-01-05
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Granted: 1989-03-21
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Expires: 2008-01-05
Abstract
Abstract A disposable multi-purpose absorbent pad has a top layer of adsorbent material, a second layer of absorbent material, and a third layer of liquid impermeable material, the layers being joined at the edges of the pad forming a peripheral seal. The underside of the third layer is coated with a foam material covering the area within the peripheral seal.
Inventors
- 👤 Glen K. Haney
- 👤 Victor Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:09
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/532; A61F13/5323; A61F13/51; A61F13/511; A61F13/51121; A61F13/539; A61F2013/15008; A61F2013/15048; A61F2013/51002; A61F2013/51078; A61F2013/51097; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/51429; A61F2013/530481
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
An absorbent pad comprising a top layer of non-woven open pored adsorbent material, a second layer of absorbent material underlying said top layer, a third layer of liquid impermeable material underlying said second layer, said top, second and third layers being joined together at their edges to form a peripheral seal, said peripheral seal defining a closed area on the underside of said third layer, and a layer of foam material underlying and adhering to the underside of said third layer solely within said closed area defined by said peripheral seal, and substantially completely covering said area.
Claim 2
Dependent Claim
97 words
An absorbent pad comprising a top layer of non-woven open pored adsorbent material, a second layer of absorbent material underlying said top layer, a third layer of liquid impermeable material underlying said second layer, said top, second and third layers being joined together at their edges to form a peripheral seal, said peripheral seal defining a closed area on the underside of said third layer, and a layer of foam material underlying and adhering to the underside of said third layer solely within said closed area defined by said peripheral seal, and substantially completely covering said area.
Claim 3
Dependent Claim
19 words
An absorbent pad as claimed in claim 1 wherein said top layer is formed of a thermoplastic polypropylene material.
Claim 4
Dependent Claim
22 words
An absorbent pad as claimed in claim 1 wherein the pores of said adsorbent material are 200 to 300 microns in size.
Claim 5
Dependent Claim
20 words
An absorbent pad as claimed in claim 1 wherein the material of said second layer is a cellulose absorbent material.
Claim 6
Dependent Claim
39 words
An absorbent pad as claimed in claim 1 wherein said layer of foam material comprises polyurethane foam attached to the underside of said third layer by a coating of low-density polyethylene polymer on the underside of said third layer.
Claim 7
Dependent Claim
21 words
An absorbent pad as claimed in claim 1 wherein said pad comprises a plurality of deformed area producing a quilted pattern.
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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) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |