Patent EP0368144A2 successfully refreshed from Google Patents.
US4047531A
Expired / Lapsed
US
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Absorbent article with differential pad
Assignee: Colgate Palmolive Co
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Filing: 1976-08-09
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Granted: 1977-09-13
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Expires: 1996-08-09
Abstract
Abstract An absorbent article of a size for placement against a wearer for capturing body fluids comprising, a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets. The pad has a first layer having a mass of fibers substantially formed from a mechanical, thermomechanical, or semichemical fluff, and a second layer having a mass of fibers substantially formed from a thermomechanical, semichemical, or chemical fluff.
Inventors
- 👤 Hamzeh Karami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:37
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/28; A61F13/537; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/530131; A61F2013/53445; A61F13/53708; A61F2013/53721
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
146 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a material selected from the group consisting of mechanical pulp, thermomechanical pulp, and semichemical pulp, and a second layer having a mass of fibers substantially formed from a material different from the selected one of the first layer and selected from the group consisting of thermomechanical pulp, semichemical pulp, and chemical pulp, with the average fibers of said first layer being more hydrophobic relative the average fibers of the second layer, and with said second layer being located intermediate the first layer and said backing sheet.
Claim 2
Dependent Claim
146 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a material selected from the group consisting of mechanical pulp, thermomechanical pulp, and semichemical pulp, and a second layer having a mass of fibers substantially formed from a material different from the selected one of the first layer and selected from the group consisting of thermomechanical pulp, semichemical pulp, and chemical pulp, with the average fibers of said first layer being more hydrophobic relative the average fibers of the second layer, and with said second layer being located intermediate the first layer and said backing sheet.
Claim 3
Dependent Claim
32 words
The article of claim 1 wherein said pad includes a third layer intermediate the first layer and said cover sheet and having a mass of fibers substantially formed from a chemical pulp.
Claim 4
Dependent Claim
146 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a material selected from the group consisting of mechanical fluff, thermomechanical fluff, and semichemical fluff, and a second layer having a mass of fibers substantially formed from a material different from the selected one of the first layer and selected from the group consisting of thermomechanical fluff, semichemical fluff, and chemical fluff, with the average fibers of the second layer being more hydrophilic relative the average fibers of the first layer, and with said second layer being located intermediate the first layer and said backing sheet.
Claim 5
Dependent Claim
146 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a material selected from the group consisting of mechanical fluff, thermomechanical fluff, and semichemical fluff, and a second layer having a mass of fibers substantially formed from a material different from the selected one of the first layer and selected from the group consisting of thermomechanical fluff, semichemical fluff, and chemical fluff, with the average fibers of the second layer being more hydrophilic relative the average fibers of the first layer, and with said second layer being located intermediate the first layer and said backing sheet.
Claim 6
Dependent Claim
25 words
The article of claim 3 wherein said first layer is located adjacent said cover sheet and said second layer is located adjacent said backing sheet.
Claim 7
Dependent Claim
31 words
The article of claim 4 including a top wadding sheet covering a front surface of the first layer, and a back wadding sheet covering a back surface of the second layer.
Claim 8
Dependent Claim
13 words
The article of claim 4 wherein said first and second layers are contiguous.
Claim 9
Dependent Claim
104 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a mechanical fluff, and a second layer having a mass of fibers substantially formed from a material selected from the group consisting of thermomechanical fluff, semichemical fluff, and chemical fluff, with said second layer being located intermediate the first layer and said backing sheet.
Claim 10
Dependent Claim
104 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a mechanical fluff, and a second layer having a mass of fibers substantially formed from a material selected from the group consisting of thermomechanical fluff, semichemical fluff, and chemical fluff, with said second layer being located intermediate the first layer and said backing sheet.
Claim 11
Dependent Claim
102 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a thermomechanical fluff, and a second layer having a mass of fibers substantially formed from a material selected from the group consisting of semichemical fluff, and chemical fluff, with said second ayer being located intermediate the first layer and said backing sheet.
Claim 12
Dependent Claim
102 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a thermomechanical fluff, and a second layer having a mass of fibers substantially formed from a material selected from the group consisting of semichemical fluff, and chemical fluff, with said second ayer being located intermediate the first layer and said backing sheet.
Claim 13
Dependent Claim
92 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a semichemical fluff, and a second layer having a mass of fibers substantially formed from a chemical fluff, with said second layer being located intermediate the first layer and said backing sheet.
Claim 14
Dependent Claim
92 words
A disposable absorbent article of a size for placement against a wearer for capturing body fluids, comprising: a backing sheet of fluid impervious material, a fluid pervious cover sheet, and an absorbent pad positioned intermediate the backing and cover sheets, said pad comprising a plurality of separate layers including a first layer having a mass of fibers substantially formed from a semichemical fluff, and a second layer having a mass of fibers substantially formed from a chemical fluff, with said second layer being located intermediate the first layer and said backing sheet.
References Cited (Backward Citations)
US3105491A
Cited
US3666611A
Cited
US3612055A
Cited
US3636952A
Cited
US3867940A
Cited
US3901238A
Cited
BE828682A
Cited
US3916900A
Cited
US3971379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |