Patent US2614941A successfully refreshed from Google Patents.
US2614941A
Expired / Lapsed
US
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Stabilized lower fatty acid ester of cellulose
Assignee: Eastman Kodak Co
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Filing: 1949-11-15
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Granted: 1952-10-21
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Expires: 1969-11-15
Abstract
No abstract record available.
Inventors
- 👤 Gordon D Hiatt
- 👤 Robert F Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:32
CPC Classifications
C; C08; C08B; C08B3/00; C08B3/22; C08B3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A LOWER FATTY ACID ESTER OF CELLULOSE HAVING A COMBINED SULFUR CONTENT OF .02-.001% TO WHICH HAS BEEN ADDED .01-5% OF A STABILIZER SELECTED FROM THE GROUP CONSISTING OF THE FORMATES OF ALLUMINUM, BARIUM, AND MAGNESIUM.
Claim 2
Dependent Claim
36 words
A LOWER FATTY ACID ESTER OF CELLULOSE HAVING A COMBINED SULFUR CONTENT OF .02-.001% TO WHICH HAS BEEN ADDED .01-5% OF A STABILIZER SELECTED FROM THE GROUP CONSISTING OF THE FORMATES OF ALLUMINUM, BARIUM, AND MAGNESIUM.
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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |