Patent US4097943A successfully refreshed from Google Patents.
US4097943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent pad
Assignee: Johnson and Johnson
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Filing: 1976-12-03
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Granted: 1978-07-04
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Expires: 1996-12-03
Abstract
Abstract An absorbent pad which comprises a fluid-impervious backing sheet, a fluid-absorbent fabric adhering to one face of the backing sheet, and at least two strips of pressure-sensitive adhesive affixed on edge portions of the other face of the backing sheet for adhering the pad to a substrate, preferably in the form of a unitized underpad wherein the absorbent fabric layer is fully adhesively laminated to the impervious backing sheet. Preferably the adhesive strips are provided in the form of tape bearing pressure-sensitive on both sides thereof, one side of such tape being adhered to the exposed surface of the backing sheet, the adhesive strength on one side of the tape being greater than the adhesive strength on the other side of the tape.
Inventors
- 👤 Thomas Christopher O'Connell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:43
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/5605; A61F13/5611; A61F13/51; A61F13/511; A61F13/513; A61F13/53; A61F13/534; A61F13/539; A61F13/58; A61F2013/51059; A61F2013/51061; A61F2013/51095; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/53445; A61F2013/53908; A61F2013/5661
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
An underpad which comprises a fluid-impervious backing sheet, a fluid absorbent fabric fully adhesively laminated to one face of the backing sheet, a fluid pervious facing layer covering the absorbent fabric on the face thereof away from the backing sheet, and at least two strips of pressure-sensitive adhesive affixed on edge portions of the other face of the backing sheet for adhering the pad to a substrate, said pressure-sensitive adhesive being provided with a releasable cover sheet, and said adhesive strips are provided in the form of tape bearing pressure-sensitive adhesive on both sides thereof, one side of such tape being adhered to the exposed surface of the backing sheet, the adhesive strength on said one side of the tape being greater than the adhesive strength on the outer side of the tape.
Claim 2
Dependent Claim
133 words
An underpad which comprises a fluid-impervious backing sheet, a fluid absorbent fabric fully adhesively laminated to one face of the backing sheet, a fluid pervious facing layer covering the absorbent fabric on the face thereof away from the backing sheet, and at least two strips of pressure-sensitive adhesive affixed on edge portions of the other face of the backing sheet for adhering the pad to a substrate, said pressure-sensitive adhesive being provided with a releasable cover sheet, and said adhesive strips are provided in the form of tape bearing pressure-sensitive adhesive on both sides thereof, one side of such tape being adhered to the exposed surface of the backing sheet, the adhesive strength on said one side of the tape being greater than the adhesive strength on the outer side of the tape.
Claim 3
Dependent Claim
14 words
A pad according to claim 1, wherein said pressure-sensitive adhesive is an acrylic adhesive.
Claim 4
Dependent Claim
25 words
A pad according to claim 1, which is rectangular and said adhesive strips are disposed adjacent to two parallel long edges of the backing sheet.
Claim 5
Dependent Claim
86 words
A pad according to claim 3, wherein the adhesive strength on said one side of the tape is from about 30 to about 112 ounces per inch of tape width and the adhesive strength on the other side of the tape is from about 20 to about 49 ounces per inch of tape width and the ratio of the adhesive strength on said one side of the tape to the adhesive strength on the other side of the tape is from about 1.5:1 to about 2.5:1.
Claim 6
Dependent Claim
86 words
A pad according to claim 3, wherein the adhesive strength on said one side of the tape is from about 60 to about 68 ounces per inch of tape width and the adhesive strength on the other side of the tape is from about 32 to about 37 ounces per inch of tape width and the ratio of the adhesive strength on said one side of the tape to the adhesive strength on the other side of the tape is from about 1.9:1 to about 2.1:1.
Claim 7
Dependent Claim
14 words
A pad according to claim 1, comprising an absorbent core layer of cellulosic material.
Claim 8
Dependent Claim
16 words
A pad according to claim 1, comprising an absorbent core layer of hydrophilic foamed synthetic resin.
Claim 9
Dependent Claim
17 words
A pad according to claim 1, wherein the fluid-impervious backing sheet comprises a film of plastics material.
Claim 10
Dependent Claim
14 words
A pad according to claim 1, wherein the facing layer is a nonwoven fabric.
Claim 11
Dependent Claim
138 words
An underpad which comprises a rectangular fluid-impervious backing sheet about 76 cm long and about 55 cm wide of opaque coloured polyethylene about 25 microns thickness; a fluid-absorbent layer, substantially coextensive with and adhesively bonded to said backing sheet, of four-ply unbleached crepe tissue wherein each ply weighs about 25.5 grams per square meter, the two long edges of the backing sheet being folded over the absorbent layer; a strip of double-sided pressure-sensitive adhesive tape applied to the major face of the backing sheet opposite the absorbent layer, near and along the length of each long edge of the pad, said strip being covered by an outer silicone impregnated release paper; and a facing layer of water repellent nonwoven fabric of about 70 grams per square meter covering the face of the absorbent layer opposite the backing sheet.
Claim 12
Dependent Claim
138 words
An underpad which comprises a rectangular fluid-impervious backing sheet about 76 cm long and about 55 cm wide of opaque coloured polyethylene about 25 microns thickness; a fluid-absorbent layer, substantially coextensive with and adhesively bonded to said backing sheet, of four-ply unbleached crepe tissue wherein each ply weighs about 25.5 grams per square meter, the two long edges of the backing sheet being folded over the absorbent layer; a strip of double-sided pressure-sensitive adhesive tape applied to the major face of the backing sheet opposite the absorbent layer, near and along the length of each long edge of the pad, said strip being covered by an outer silicone impregnated release paper; and a facing layer of water repellent nonwoven fabric of about 70 grams per square meter covering the face of the absorbent layer opposite the backing sheet.
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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) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |