US3068112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric derivatives of bicycloheptene as stabilizers for polymer compositions
Assignee: Eastman Kodak Co
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Filing: 1960-04-27
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Granted: 1962-12-11
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Expires: 1980-04-27
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 John W Tamblyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:24
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06; C08L1/00; C08L1/08; C08L1/10; C08L57/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PLASTIC COMPOSITION CONSISTING ESSENTIALLY OF A CELLULOSE ESTER OBTAINED BY ESTERIFYING CELLULOSE WITH A CARBOXYLIC ACID HAVING 2-10 CARBON ATOMS AND A STABILIZING AMOUNT OF A POLYESTER HAVING A MOLECULAR WEIGHT OF 500-1800 MADE BY CONDENSING BICYCLO-(2,2.1)-5-HEPTENE2,3-DICARBOXYLIC ACID WITH A GLYCOL SELECTED FROM THE CLASS CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, BUTYLENE GLYCOL, AND BUTENEDIOL-1,4.
Claim 2
Dependent Claim
56 words
A PLASTIC COMPOSITION CONSISTING ESSENTIALLY OF A CELLULOSE ESTER OBTAINED BY ESTERIFYING CELLULOSE WITH A CARBOXYLIC ACID HAVING 2-10 CARBON ATOMS AND A STABILIZING AMOUNT OF A POLYESTER HAVING A MOLECULAR WEIGHT OF 500-1800 MADE BY CONDENSING BICYCLO-(2,2.1)-5-HEPTENE2,3-DICARBOXYLIC ACID WITH A GLYCOL SELECTED FROM THE CLASS CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, BUTYLENE GLYCOL, AND BUTENEDIOL-1,4.
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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |