US2683087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent cellulosic products
Assignee: Wyeth Holdings LLC
•
Filing: 1948-02-10
•
Granted: 1954-07-06
•
Expires: 1968-02-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter Florus Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:42
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
ABSORBENT PAPER COMPOSED OF FELTED CELLULOSIC FIBERS HAVING UNIFORMLY ADSORBED THEREON FROM ABOUT 0.01% TO ABOUT 1.0% BY WEIGHT OF THE CONDENSATION PRODUCT OF FROM 2.5 TO 75 MOLS OF ETHYLENE OXIDE WITH 1 MOL OF OCTADECYLAMINE.
Claim 2
Dependent Claim
37 words
ABSORBENT PAPER COMPOSED OF FELTED CELLULOSIC FIBERS HAVING UNIFORMLY ADSORBED THEREON FROM ABOUT 0.01% TO ABOUT 1.0% BY WEIGHT OF THE CONDENSATION PRODUCT OF FROM 2.5 TO 75 MOLS OF ETHYLENE OXIDE WITH 1 MOL OF OCTADECYLAMINE.
References Cited (Backward Citations)
US792932A
Cited
US1970578A
Cited
GB380851A
Cited
US2005397A
Cited
US1986291A
Cited
US2136928A
Cited
US2213477A
Cited
US2325302A
Cited
US2315675A
Cited
US2338602A
Cited
US2291079A
Cited
US2291080A
Cited
US2343090A
Cited
US2343095A
Cited
US2387683A
Cited
US2345543A
Cited
US2407376A
Cited
US2487899A
Cited
US2563897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |