Patent US3557062A successfully refreshed from Google Patents.
US3557062A
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Polar polymers derived from bicyclo(2.2.1)heptene-2
Assignee: Charbonnages de France CDF
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Filing: 1968-07-22
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Granted: 1971-01-19
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Expires: 1988-07-22
Abstract
Abstract NEW POLYMERS OBTAINED FROM ESTERS DERIVED FROM BICYCLO (2.2.1) HEPTENE-2 CARBOXYLIC-5 AND DICARBOXYLIC-5,6 ACIDS HAVING A GLASS TRANSITION TEMPERATURE LOWER THAN -10*C. FOR USE IN THE FIELD OF ELASTOMERS.
Inventors
- 👤 Jean Vergne
- 👤 Leon Solaux
- 👤 Jean-Claude Robinet
- 👤 Philippe Lacroix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:35
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |