US3140299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of trimellitic acid anhydrides
Assignee: General Electric Co
•
Filing: 1962-04-27
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Granted: 1964-07-07
•
Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Donald F Loncrini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:36
CPC Classifications
C; C07; C07C; C07C63/00; C07C63/307; C07C63/33; C07C63/331; C07D; C07D307/00; C07D307/77; C07D307/87; C07D307/89; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C07F7/0812; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
AN ANHYDRIDE CHOSEN FROM THE GROUP CONSISTING OF 4-P-PHENYLPHENYL TRIMELLITATE ANHYDRIDE, 4 - PHENYL TRIMELLITAMIDE ANHYDRIDE AND 4-NONYLPHENYL TRIMELLITATE ANHYDRIDE.
Claim 2
Dependent Claim
20 words
AN ANHYDRIDE CHOSEN FROM THE GROUP CONSISTING OF 4-P-PHENYLPHENYL TRIMELLITATE ANHYDRIDE, 4 - PHENYL TRIMELLITAMIDE ANHYDRIDE AND 4-NONYLPHENYL TRIMELLITATE ANHYDRIDE.
References Cited (Backward Citations)
US2500600A
Cited
US2817644A
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US2890204A
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US2911416A
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US3022320A
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US3063969A
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US3002003A
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US3027400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |