US3602225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biodegradable absorbent pad
Assignee: FMC Corp
•
Filing: 1969-05-07
•
Granted: 1971-08-31
•
Expires: 1989-05-07
Abstract
Abstract A disposable, absorbent pad containing biodegradable absorbent filler and a highly biodegradable cellulose moisture barrier film is disclosed herein.
Inventors
- 👤 Edward A Wielicki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:36
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/15203; A61F13/15252; A61F13/15211
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
38 words
A disposable absorbent pad which comprises biodegradable absorbent filler material and a nonfibrous regenerated cellulose moisture barrier film containing from about 75 to about 120 percent, based on the weight of the cellulose, of an organic cellulose plasticizer.
Claim 2
Dependent Claim
38 words
A disposable absorbent pad which comprises biodegradable absorbent filler material and a nonfibrous regenerated cellulose moisture barrier film containing from about 75 to about 120 percent, based on the weight of the cellulose, of an organic cellulose plasticizer.
Claim 3
Dependent Claim
21 words
The disposable absorbent pad of claim 1 wherein the barrier film contains from 1 to 20 of a particular slip agent.
Claim 4
Dependent Claim
17 words
The disposable absorbent pad of claim 1 wherein the organic plasticizer is glycerol or a polyalkylene glycol.
Claim 5
Dependent Claim
34 words
The disposable absorbent pad of claim 1 wherein the barrier film contains from 90 to 110 percent of a polyethylene glycol having an average molecular weight range of from about 250 to about 700.
Claim 6
Dependent Claim
22 words
The disposable absorbent pad of claim 4 wherein the barrier film contains from 5 to 15 percent of a particulate slip agent.
Claim 7
Dependent Claim
33 words
A rapidly biodegradable sheet consisting essentially of a nonfibrous, regenerated cellulose film containing from about 75 to about 120 percent, based on the weight of the cellulose, of an organic plasticizer for cellulose.
Claim 8
Dependent Claim
33 words
A rapidly biodegradable sheet consisting essentially of a nonfibrous, regenerated cellulose film containing from about 75 to about 120 percent, based on the weight of the cellulose, of an organic plasticizer for cellulose.
Claim 9
Dependent Claim
25 words
The rapidly biodegradable sheet of claim 6 incorporating from 1 to 20 percent, based on the weight of the sheet, of a particulate slip agent.
Claim 10
Dependent Claim
17 words
The rapidly biodegradable sheet of claim 6 wherein the organic plasticizer is glycerol or a polyalkylene glycol.
Claim 11
Dependent Claim
36 words
The rapidly biodegradable sheet of claim 6 wherein the nonfibrous, regenerated cellulose film contains from 90 to 110 percent of a polyethylene glycol having an average molecular weight range of from about 250 to about 700.
References Cited (Backward Citations)
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Cited
US3052237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |