US3437636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinkable polyamide-acids and polyimides and crosslinked polymeric products made therefrom
Assignee: EIDP Inc
•
Filing: 1966-05-02
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Granted: 1969-04-08
•
Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Rudolph J Angelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:05
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1075; C08G73/1082; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6415; C08G18/6438; C08G73/1003; C08G73/1046; C08G73/1053; C08G73/1057; C08G73/106; C08G73/1064; C08G73/1067; C08G73/1085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3336258A
Cited
US3306876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |