US3557142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4,5,6,7-tetrahydro-indole-lower-alkanoic acids and esters
Assignee: STWB Inc
•
Filing: 1968-02-20
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Granted: 1971-01-19
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Expires: 1988-02-20
Abstract
Abstract NEW 3-SUBSTITUTED-1 - INDOLE- AND 4,5,6,7 - TETRAHYDROINDOLE-LOWER-ALKANOIC ACIDS AND ESTERS HAVING USEFUL ANTIINFLAMMATORY ACTIVITY AND PREPARED BY ALKYLATION OF A 3 - SUBSTITUTED - INDOLE WITH AN APPROPRIATE HALO-LOWER-ALKANOIC ACID OR ESTER OR BY CYCLIZATION OF A 2-(2-R2-2-OXOETHYL) CYCLOHEXANONE OR 2-(1 -PHENYL-2-OXO-LOWER-ALKYL) CYCLOHEXANONE WITH AN AMINO ACID OR ESTER.
Inventors
- 👤 Malcolm R Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:09
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/12; C07D209/08; C07D209/30; C07D209/32; C07D209/36
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |