Patent US4612416A successfully refreshed from Google Patents.
Patent US3620375A successfully refreshed from Google Patents.
Patent US4413995A successfully refreshed from Google Patents.
US4413995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent panel suitable for use in absorbent products
Assignee: PERSON PRODUCTS COMPANY A CORP OF NJ
•
Filing: 1982-05-21
•
Granted: 1983-11-08
•
Expires: 2002-05-21
Abstract
Abstract The invention provides an absorbent panel which consists of a paper, film or fabric substrate coated on at least one surface with a reactive composition containing from 10 to 40 parts by weight of a liquid polyhydroxy organic compound and from 90 to 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10. The absorbent panel is capable of absorbing at least 15 times its weight of liquid and is a thin structure.
Inventors
- 👤 Ralf Korpman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:44
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/45; A61F13/47; A61F13/472; A61F13/49; A61F13/49007; A61F13/51; A61F13/511; A61F13/51121; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/225; A61L15/24; A61L15/42; A61L15/60; A61F13/20; A61F13/2002; A61F13/202; A61F13/56; A61F13/58; A61F13/15577; A61F2013/15821; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/530007; A61F2013/530481; A61F2013/530489; A61F2013/530496; A61F2013/53051; A61F2013/530547; A61F2013/530554; A61F2013/583; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T442/00; Y10T442/20; Y10T442/2484
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
61 words
An absorbent panel comprising a paper or fabric substrate coated on at least one surface thereof with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compound and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 2
Dependent Claim
61 words
An absorbent panel comprising a paper or fabric substrate coated on at least one surface thereof with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compound and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 3
Dependent Claim
25 words
The absorbent panel of claim 1 wherein the liquid polyhydroxy organic compound is selected from the group consisting of glycerol, ethylene glycol and propylene glycol.
Claim 4
Dependent Claim
13 words
The absorbent panel of claim 1 wherein the absorbent polymer is a polyacrylate.
Claim 5
Dependent Claim
11 words
The absorbent panel of claim 1 wherein the substrate is paper.
Claim 6
Dependent Claim
12 words
The absorbent panel of claim 1 wherein the substrate is a fabric.
Claim 7
Dependent Claim
13 words
The absorbent panel of claim 5 wherein the fabric is a nonwoven fabric.
Claim 8
Dependent Claim
12 words
The absorbent panel of claim 6 wherein the nonwoven fabric is polyester.
Claim 9
Dependent Claim
59 words
An absorbent panel comprising a nonwoven fabric coated on at least one surface thereof with a reactive composition of from about 20 to about 30 parts by weight of a liquid polyhydroxy organic compound and from about 80 to about 70 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 10
Dependent Claim
59 words
An absorbent panel comprising a nonwoven fabric coated on at least one surface thereof with a reactive composition of from about 20 to about 30 parts by weight of a liquid polyhydroxy organic compound and from about 80 to about 70 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 11
Dependent Claim
69 words
A disposable absorbent structure containing an absorbent core comprising an absorbent panel having a paper or fabric substrate coated on at least one surface with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compound and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 12
Dependent Claim
69 words
A disposable absorbent structure containing an absorbent core comprising an absorbent panel having a paper or fabric substrate coated on at least one surface with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compound and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 13
Dependent Claim
27 words
The absorbent structure of claim 9 wherein the absorbent core comprises said absorbent panel and a lightly compacted cellulosic fibrous batt in juxtaposition with said absorbent panel.
Claim 14
Dependent Claim
91 words
A disposable diaper having a moisture-impermeable backing and absorbent core and a moisture-permeable facing sheet said absorbent core being sandwiched between said facing sheet and said backing sheet, the improvement comprising an absorbent core containing a paper or fabric substrate coated on at least one surface with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compound and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 15
Dependent Claim
91 words
A disposable diaper having a moisture-impermeable backing and absorbent core and a moisture-permeable facing sheet said absorbent core being sandwiched between said facing sheet and said backing sheet, the improvement comprising an absorbent core containing a paper or fabric substrate coated on at least one surface with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compound and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 16
Dependent Claim
64 words
A sanitary napkin containing an absorbent core comprising a paper or fabric substrate coated on at least one surface with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compund and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 17
Dependent Claim
64 words
A sanitary napkin containing an absorbent core comprising a paper or fabric substrate coated on at least one surface with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compund and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 18
Dependent Claim
27 words
The sanitary napkin of claim 12 wherein the absorbent core comprises a loosely-compacted, cellulosic, fibrous batt and said absorbent panel placed in juxtaposition one to the other.
Claim 19
Dependent Claim
21 words
The sanitary napkin of claim 12 wherein the absorbent core comprises said absorbent panel surrounded by a loosely-compacted cellulosic fibrous batt.
Claim 20
Dependent Claim
63 words
A tampon containing an absorbent core comprising a paper or fabric substrate coated on at least one surface with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compound and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 21
Dependent Claim
63 words
A tampon containing an absorbent core comprising a paper or fabric substrate coated on at least one surface with a reactive composition of from about 10 to about 40 parts by weight of a liquid polyhydroxy organic compound and from about 90 to about 60 parts by weight of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10.
Claim 22
Dependent Claim
98 words
A process for preparing an absorbent panel comprising: (a) providing a paper, film, or fabric substrate with a thin layer of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10; (b) coating the substrate on the side of the layer of particulate polymer with a liquid polyhydroxy organic compound to provide a reactive composition on the substrate, the composition containing from about 10 to about 40 parts by weight of said organic compound and from about 90 to about 60 parts by weight of said particulate polymer; and (c) fusing said reactive composition.
Claim 23
Dependent Claim
98 words
A process for preparing an absorbent panel comprising: (a) providing a paper, film, or fabric substrate with a thin layer of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10; (b) coating the substrate on the side of the layer of particulate polymer with a liquid polyhydroxy organic compound to provide a reactive composition on the substrate, the composition containing from about 10 to about 40 parts by weight of said organic compound and from about 90 to about 60 parts by weight of said particulate polymer; and (c) fusing said reactive composition.
Claim 24
Dependent Claim
27 words
The process of claim 16 wherein said reactive composition is present on said substrate in an amount from about 10 to about 250 grams per square meter.
References Cited (Backward Citations)
US2992149A
Cited
US4333464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |