US3264250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymeric polyamide-acids and polyimides
Assignee: EIDP Inc
•
Filing: 1963-12-18
•
Granted: 1966-08-02
•
Expires: 1983-12-18
Abstract
No abstract record available.
Inventors
- 👤 Walter G Gall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:15
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1042; C08G73/1067; C08G73/1071; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/25; C09J2479/00; C09J2479/08; C09J2479/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A SHAPEABLE COMPOSITION COMPRISING A COPOLYMER CONSISTING ESSENTIALLY OF AT LEAST 30 MOLE PERCENT RECURRING UNITS OF
Claim 2
Dependent Claim
12 words
A SHAPEABLE COMPOSITION AS IN CLAIM 5 WHEREIN THE SOLVENT IS N,N-DIMETHYLACETAMIDE.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |