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US3179633A
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Aromatic polyimides from meta-phenylene diamine and para-phenylene diamine
Assignee: EIDP Inc
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Filing: 1962-01-26
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Granted: 1965-04-20
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Expires: 1982-01-26
Abstract
No abstract record available.
Inventors
- 👤 Laszlo Andrew Endrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:39
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1057; C08G73/1003; C08G73/1007; C08G73/1046; C08G73/106; C08G73/1064; C08G73/1067; C08G73/1071; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31551; Y10T428/31623; Y10T428/31678; Y10T428/31681; Y10T428/31721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A POLYIMIDE HAVING THE RECURRING UNIT:
Claim 2
Dependent Claim
6 words
A POLYIMIDE HAVING THE RECURRING UNIT:
References Cited (Backward Citations)
US2071250A
Cited
US2710853A
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US2712543A
Cited
US2731447A
Cited
US2880230A
Cited
US2900369A
Cited
US3037966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |