Patent US3277043A successfully refreshed from Google Patents.
US3277043A
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Process to obtain phenolic solvent soluble polycarbonamide-imides and solutions thereof
Assignee: General Electric Co
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Filing: 1963-12-26
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Granted: 1966-10-04
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Fred F Holub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:20
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1067; C08G73/1071; C08G73/1042; C08G73/1057; C08G73/1064; C08G73/1075; C08G73/1078; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE PROCESS OF MAKING A HEAT-CURABLE LIQUID COATING COMPOSITION WHICH COMPRISES REACTING, UNDER INTIALLY SUBSTANTIALLY ANHYDROUS CONDITIONS, (A) AT LEAST ONE CARBONYLDIPHTHALIC ANHYDRIDE DIRECTLY WITH (B) AT LEAST ONE DIAMINE SELECTED FROM THE GROUP CONSISTING OF C2-3 ALKYLENEDIAMINES, M-PHENYLENEDIAMINE AND DIAMINES HAVING THE FORMULA
Claim 2
Dependent Claim
44 words
THE PROCESS OF MAKING A HEAT-CURABLE LIQUID COATING COMPOSITION WHICH COMPRISES REACTING, UNDER INTIALLY SUBSTANTIALLY ANHYDROUS CONDITIONS, (A) AT LEAST ONE CARBONYLDIPHTHALIC ANHYDRIDE DIRECTLY WITH (B) AT LEAST ONE DIAMINE SELECTED FROM THE GROUP CONSISTING OF C2-3 ALKYLENEDIAMINES, M-PHENYLENEDIAMINE AND DIAMINES HAVING THE FORMULA
References Cited (Backward Citations)
US3190856A
Cited
US3179634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |