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US4212302A Expired / Lapsed US ⏱️ 0.0 years remaining

Absorbent article with spaced hydrocolloid material

Assignee: Colgate Palmolive Co
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Filing: 1977-12-22
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Granted: 1980-07-15
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Expires: 1997-12-22
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Abstract

Abstract An absorbent article comprising, a fluid pervious top sheet, a backing sheet of fluid impervious material, and an absorbent pad intermediate the top and backing sheets. The pad has a fluid receiving region adjacent a central portion of the pad and a hydrocolloid material at a location spaced from the fluid receiving region, with the fluid receiving region being substantially free of the hydrocolloid material.

Inventors

  • 👤 Hamzeh Karami

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:35
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/494; A61F13/49406; A61F13/49413; A61F13/53; A61F13/531; A61F13/532; A61F13/5323; A61F13/534; A61F13/53409; A61F2013/530131; A61F2013/530481; A61F2013/53051

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 256 words
A disposable diaper comprising, an absorbent pad assembly having a pair of side edges, a pair of end edges connecting the side edges, a fluid pervious top sheet, a backing sheet of fluid impervious material, and an absorbent pad comprising a mass of fibers located intermediate said top and backing sheets and having a pair of opposed side edges located adjacent the side edges of the pad assembly, said pad assembly having a pair of longitudinal first fold lines defining a longitudinally extending central panel, and a pair of second longitudinal fold lines defining a pair of longitudinally extending first panels located intermediate the first and second fold lines and overlying the central panel, said second fold lines defining a pair of longitudinally extending outermost panels overlying the first panels and located intermediate the second fold lines and the side edges of the pad assembly, with the outermost panels including side margins of the pad, said pad assembly having a hydrocolloid material dispersed in fibers of the pad and positioned in longitudinal central regions of said opposed pad side margins, a pair of opposed pad end margins located adjacent said pair of opposed end edges of the pad assembly, said opposed pad end margins having a hydrocolloid material dispersed in fibers of the pad, with said central panel defining a fluid receiving region and being substantially free of hydrocolloid material, and said diaper having a pair of tape fasteners located adjacent said opposed side edges of the pad assembly and adjacent one of said end edges.
Claim 2
Dependent Claim 256 words
A disposable diaper comprising, an absorbent pad assembly having a pair of side edges, a pair of end edges connecting the side edges, a fluid pervious top sheet, a backing sheet of fluid impervious material, and an absorbent pad comprising a mass of fibers located intermediate said top and backing sheets and having a pair of opposed side edges located adjacent the side edges of the pad assembly, said pad assembly having a pair of longitudinal first fold lines defining a longitudinally extending central panel, and a pair of second longitudinal fold lines defining a pair of longitudinally extending first panels located intermediate the first and second fold lines and overlying the central panel, said second fold lines defining a pair of longitudinally extending outermost panels overlying the first panels and located intermediate the second fold lines and the side edges of the pad assembly, with the outermost panels including side margins of the pad, said pad assembly having a hydrocolloid material dispersed in fibers of the pad and positioned in longitudinal central regions of said opposed pad side margins, a pair of opposed pad end margins located adjacent said pair of opposed end edges of the pad assembly, said opposed pad end margins having a hydrocolloid material dispersed in fibers of the pad, with said central panel defining a fluid receiving region and being substantially free of hydrocolloid material, and said diaper having a pair of tape fasteners located adjacent said opposed side edges of the pad assembly and adjacent one of said end edges.
Claim 3
Dependent Claim 27 words
The article of claim 1 wherein said hydrocolloid material is located adjacent a front surface of said opposed pad side margins and said opposed pad end margins.
Claim 4
Dependent Claim 27 words
The article of claim 1 wherein said hydrocolloid material is located adjacent a back surface of said opposed pad side margins and said opposed pad end margins.

References Cited (Backward Citations)

US3344789A Cited
US3670731A Cited
CA940284A Cited
US3971379A Cited
US4005712A Cited
US4055180A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-07-15 1984-01-14 1984-07-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-07-15 1988-01-14 1988-07-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-07-15 1992-01-14 1992-07-15 $7700.00 Window Closed / Lapsed

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