Patent US3843378A successfully refreshed from Google Patents.
US3843378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerated cellulose-polyethylene glycol high fluid-holding fiber mass
Assignee: FMC Corp
•
Filing: 1972-10-16
•
Granted: 1974-10-22
•
Expires: 1992-10-16
Abstract
Abstract 1. FLUID ABSORBENT ALLOY FIBERS COMPRISED OF A MATRIX OF REGENERATED CELLULOSE HAVING UNIFORMLY DISPERSED THEREIN FROM ABOUT 5 TO ABOUT 25%, BASED UPON THE WEIGHT OF THE CELLULOSE, POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM 10,000 TO 40,000.
Inventors
- 👤 F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:21
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2051; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/26; A61L15/42; A61L15/425; C08L1/00; C08L1/02; C08L1/06; D; D01; D01F; D01F2/00; D01F2/06; D01F2/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
FLUID ABSORBENT ALLOY FIBERS COMPRISED OF A MATRIX OF REGENERATED CELLULOSE HAVING UNIFORMLY DISPERSED THEREIN FROM ABOUT 5 TO ABOUT 25%, BASED UPON THE WEIGHT OF THE CELLULOSE, POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM 10,000 TO 40,000.
Claim 2
Dependent Claim
42 words
FLUID ABSORBENT ALLOY FIBERS COMPRISED OF A MATRIX OF REGENERATED CELLULOSE HAVING UNIFORMLY DISPERSED THEREIN FROM ABOUT 5 TO ABOUT 25%, BASED UPON THE WEIGHT OF THE CELLULOSE, POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM 10,000 TO 40,000.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |