US2764507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of films with methylolcarbamyl polyazaalkane resins
Assignee: Wyeth Holdings LLC
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Filing: 1954-09-17
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Granted: 1956-09-25
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Expires: 1974-09-17
Abstract
No abstract record available.
Inventors
- 👤 Jen Yun
- 👤 William M Wooding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:18
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J7/052; C08J2301/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31826; Y10T428/31833; Y10T428/31841; Y10T428/31855; Y10T428/31859; Y10T428/3187; Y10T428/31942; Y10T428/31949; Y10T428/31953
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
NON-FIBROUS REGENERATED CELLULOSE FILM IMPREGNATED WITH A NORMALLY WATER-DISPERSIBLE THEREMOSETTING CATIONIC METHYLOLCARBAMYL POLYAZAALKANE RESIN, WHEREIN SAID RESIN IS AT LEAST PARTIALLY CURED THE POLYAZAALKANE FROM WHICH SAID RESIN IN PREPARED HAVING A GARDNER-HOLDT VISCOSITY OF AT LEAST ABOUT A3 AT 25* C. AS AN AQUEOUS SOLUTION CONTAINING 33% BY WEIGHT OF RESIN SOLIDS.
Claim 2
Dependent Claim
53 words
NON-FIBROUS REGENERATED CELLULOSE FILM IMPREGNATED WITH A NORMALLY WATER-DISPERSIBLE THEREMOSETTING CATIONIC METHYLOLCARBAMYL POLYAZAALKANE RESIN, WHEREIN SAID RESIN IS AT LEAST PARTIALLY CURED THE POLYAZAALKANE FROM WHICH SAID RESIN IN PREPARED HAVING A GARDNER-HOLDT VISCOSITY OF AT LEAST ABOUT A3 AT 25* C. AS AN AQUEOUS SOLUTION CONTAINING 33% BY WEIGHT OF RESIN SOLIDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |