Patent US2683087A successfully refreshed from Google Patents.
US2683087A
Expired / Lapsed
US
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Absorbent cellulosic products
Assignee: Wyeth Holdings LLC
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Filing: 1948-02-10
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Granted: 1954-07-06
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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
2026-11-06 11:57
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.
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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 |