US3634453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxindole carboxamides
Assignee: Pfizer Inc
•
Filing: 1969-10-15
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Granted: 1972-01-11
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Expires: 1989-10-15
Abstract
Abstract A SERIES OF NOVEL 2-OXXO-2,3-DIHYDROINDOLE-3-CARBOXAMIDES HAVE BEEN PREPARD, INCLUDING THEIR PHARMACEUTICALLY ACCEPTABLE SALTS. THESE COMPOUNDS AE USEFUL IN THERAPY AS NON-STEROIDAL ANTI-INFLAMMATORY AGENTS, WITH 2'',4''-DIFLUORO - 1 - ETHYL - 2 - OXO --5 - BROMO - 283 - DIHYDROINDOLE-3-CARBOXANILIDE AND 1-ETHYL-2-OXO-5,6-DICHLORO-2,3DIHYDROINDOLE-3-CARBOXANILIDE BEING THE KEY COMPOUNDS OF CHOICE. ALTERNATE METHODS OF PREPARATION ARE PROVIDED AND SOME OF THESE SYNTHETIC ROUTES ARE SESCRIBED IN DETAIL.
Inventors
- 👤 James M Mcmanus
- 👤 Saul B Kadin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/30; C07D209/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |