US3786028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,2,5-thiadiazole polyesters
Assignee: EIDP Inc
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Filing: 1972-03-23
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Granted: 1974-01-15
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Expires: 1992-03-23
Abstract
Abstract DISCLOSED HEREIN ARE POLYMERS CONTAINING 1,2,5-THIADIAZOLE RINGSS IN THE POLYMER CHAIN AND THEIR PREPARATIONS. THE POLYMERS ARE CAPABLE OF BEING MADE INTO FILMS, FIBERS, COATINGS AND MOLDED OBJECTS.
Inventors
- 👤 R Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:50
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/08; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3855; C08G18/3874; C08G63/00; C08G63/68; C08G63/688; C08G69/00; C08G75/00; C08G75/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |