US2956895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose ester compositions
Assignee: Eastman Kodak Co
•
Filing: 1957-06-27
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Granted: 1960-10-18
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Expires: 1977-06-27
Abstract
No abstract record available.
Inventors
- 👤 Salo Martin
- 👤 Gerard J Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:15
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/12; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A COATING COMPOSITION ADAPTED TO BE USED FOR THE PRODUCTION OF WATER RESISTANT COATINGS WHICH ESSENTIALLY CONSISTS OF AN AQUEOUS SOLUTION OF CELLULOSE ACETATE HAVING AN ACETYL CONTENT OF 12-19% CONTAINING 5-20% OF DIMETHYLOL UREA BASED ON THE WEIGHT OF THE CELLULOSE ACETATE AND A DI ALKYL ACID PHOSPHATE CATALYST.
Claim 2
Dependent Claim
50 words
A COATING COMPOSITION ADAPTED TO BE USED FOR THE PRODUCTION OF WATER RESISTANT COATINGS WHICH ESSENTIALLY CONSISTS OF AN AQUEOUS SOLUTION OF CELLULOSE ACETATE HAVING AN ACETYL CONTENT OF 12-19% CONTAINING 5-20% OF DIMETHYLOL UREA BASED ON THE WEIGHT OF THE CELLULOSE ACETATE AND A DI ALKYL ACID PHOSPHATE CATALYST.
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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |