Patent US3526610A successfully refreshed from Google Patents.
US3526610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic polyimides containing both acetamide and carboxylic acid radicals and cross-linked polymers of same
Assignee: Westinghouse Electric Corp
•
Filing: 1968-02-19
•
Granted: 1970-09-01
•
Expires: 1988-02-19
Abstract
No abstract record available.
Inventors
- 👤 George M Bower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:51
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1067; C08G73/1003; C08G73/1007; C08G73/101
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |