US3783872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable absorbent pads containing insoluble hydrogels
Assignee: Glad Products Co
•
Filing: 1969-06-23
•
Granted: 1974-01-08
•
Expires: 1989-06-23
Abstract
Abstract Improved disposable absorbent articles, such as diapers, catamenial devices and sanitary napkins, are provided which contain certain insoluble hydrogels as an absorbing media.
Inventors
- 👤 P King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; A61F13/20; A61F13/2002; A61F13/202; A61F2013/530481; Y; Y10; Y10S; Y10S604/00; Y10S604/904
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
17 words
The disposable absorbent article of claim 1 wherein said hydrophilic polymer is comprised of cross-linked poly(alkylene oxide).
Claim 2
Dependent Claim
17 words
The disposable absorbent article of claim 1 wherein said hydrophilic polymer is comprised of cross-linked poly(ethylene oxide).
Claim 3
Dependent Claim
13 words
A catamenial device containing therein the hydrophilic polymer as defined in claim 1.
Claim 4
Dependent Claim
8 words
A catamenial device containing therein cross-linked poly(ethylene oxide).
Claim 5
Dependent Claim
13 words
A sanitary napkin containing therein the hydrophilic polymer as defined in claim 1.
Claim 6
Dependent Claim
8 words
A sanitary napkin containing therein cross-linked poly(ethylene oxide).
Claim 7
Dependent Claim
12 words
A diaper containing therein the hydrophilic polymer as defined in claim 1.
Claim 8
Dependent Claim
7 words
A diaper containing therein cross-linked poly(ethylene oxide).
References Cited (Backward Citations)
US2331271A
Cited
US3121427A
Cited
US3340875A
Cited
US3344789A
Cited
US3371666A
Cited
US3386441A
Cited
US3670731A
Cited
US3669103A
Cited
US3419006A
Cited
US3664343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |