US4029100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shape retaining diaper
Assignee: Colgate Palmolive Co
•
Filing: 1976-01-05
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Granted: 1977-06-14
•
Expires: 1996-01-05
Abstract
Abstract A disposable diaper comprising, an absorbent pad assembly having a pair of waistline portions, a crotch portion intermediate the waistline portion, a backing sheet, a fluid pervious cover sheet, and absorbent pad means positioned between the backing and cover sheets. The pad means comprises a first absorbent pad including a hydrophilic material and defining a front surface of the pad means between the crotch portion and waistline portions of the pad assembly, and a second pad in the crotch portion of a material which has a large wet resiliency relative the first pad to maintain the shape of the crotch portion when wetted and placed under loads during use of the diaper.
Inventors
- 👤 Hamzeh Karami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:16
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/532; A61F13/534; A61F13/535; A61F2013/5312
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
112 words
A disposable diaper comprising, an absorbent pad assembly having a pair of waistline portions, a crotch portion intermediate said waistline portions, a backing sheet, a fluid pervious cover sheet, and absorbent pad means positioned between the backing and cover sheets, said pad means comprising a first absorbent pad including a hydrophilic material and defining a front surface of the pad means between the crotch portion and waistline portions of the pad assembly, and a second pad in said crotch portion of a material which has a large wet resiliency relative said first pad to maintain the shape of said crotch portion when wetted and placed under loads during use of the diaper.
Claim 2
Dependent Claim
112 words
A disposable diaper comprising, an absorbent pad assembly having a pair of waistline portions, a crotch portion intermediate said waistline portions, a backing sheet, a fluid pervious cover sheet, and absorbent pad means positioned between the backing and cover sheets, said pad means comprising a first absorbent pad including a hydrophilic material and defining a front surface of the pad means between the crotch portion and waistline portions of the pad assembly, and a second pad in said crotch portion of a material which has a large wet resiliency relative said first pad to maintain the shape of said crotch portion when wetted and placed under loads during use of the diaper.
Claim 3
Dependent Claim
13 words
The diaper of claim 1 wherein said first pad comprises comminuted wood pulp.
Claim 4
Dependent Claim
18 words
The diaper of claim 2 wherein said first pad includes a front wadding sheet defining said front surface.
Claim 5
Dependent Claim
13 words
A diaper of claim 1 wherein said second pad comprises a foam material.
Claim 6
Dependent Claim
25 words
The diaper of claim 4 wherein said second pad is made from a material selected from the group consisting of polyurethane foam, and polyethylene foam.
Claim 7
Dependent Claim
17 words
The diaper of claim 1 wherein said second pad extends substantially the width of said pad means.
Claim 8
Dependent Claim
24 words
The diaper of claim 1 wherein said pad means has a greater thickness in the crotch portion than adjoining areas of the pad means.
Claim 9
Dependent Claim
18 words
The diaper of claim 1 wherein said second pad projects above the front surface of the first pad.
Claim 10
Dependent Claim
61 words
A disposable diaper comprising, an absorbent pad assembly having a pair of waistline portions, a crotch portion intermediate said waistline portions, and absorbent pad means comprising, a first pad of foam material in said crotch portion, and a second pad including comminuted wood pulp and defining a front surface of the pad means on opposed longitudinal sides of the first pad.
Claim 11
Dependent Claim
61 words
A disposable diaper comprising, an absorbent pad assembly having a pair of waistline portions, a crotch portion intermediate said waistline portions, and absorbent pad means comprising, a first pad of foam material in said crotch portion, and a second pad including comminuted wood pulp and defining a front surface of the pad means on opposed longitudinal sides of the first pad.
Claim 12
Dependent Claim
61 words
A disposable diaper comprising, an absorbent pad assembly having a pair of waistline portions, a crotch portion intermediate said waistline portions, and absorbent pad means comprising, a first pad of a foam material in said crotch portion, and spaced second and third pads of an absorbent material located intermediate said first pad and the opposed waistline portions of the pad assembly.
Claim 13
Dependent Claim
61 words
A disposable diaper comprising, an absorbent pad assembly having a pair of waistline portions, a crotch portion intermediate said waistline portions, and absorbent pad means comprising, a first pad of a foam material in said crotch portion, and spaced second and third pads of an absorbent material located intermediate said first pad and the opposed waistline portions of the pad assembly.
Claim 14
Dependent Claim
15 words
The diaper of claim 10 wherein said second and third pads comprise comminuted wood pulp.
Claim 15
Dependent Claim
23 words
The diaper of claim 10 wherein the thickness of said first pad is greater than the thickness of said second and third pads.
Claim 16
Dependent Claim
74 words
A disposable diaper comprising, an absorbent pad assembly having a crotch portion, a pair of waistline portions, and absorbent pad means comprising, a first pad of an absorbent material, and a second pad of a foam material covering a part of said first pad only in the crotch portion of the pad assembly, with portions of said first pad defining a front surface of the pad means in both wasitline portions of the diaper.
Claim 17
Dependent Claim
74 words
A disposable diaper comprising, an absorbent pad assembly having a crotch portion, a pair of waistline portions, and absorbent pad means comprising, a first pad of an absorbent material, and a second pad of a foam material covering a part of said first pad only in the crotch portion of the pad assembly, with portions of said first pad defining a front surface of the pad means in both wasitline portions of the diaper.
Claim 18
Dependent Claim
13 words
The diaper of claim 13 wherein said first pad comprises comminuted wood pulp.
Claim 19
Dependent Claim
27 words
The diaper of claim 13 wherein said first pad includes a recess in its front surface to receive and retain said second pad in said pad means.
Claim 20
Dependent Claim
32 words
The diaper of claim 13 wherein said second pad projects above a front surface of the first pad defined between said second pad and the opposed waistline portions of the pad assembly.
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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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |