US3598867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dibenzocyclohepta-triene and-diene derivatives
Assignee: Rhone Poulenc SA
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Filing: 1967-10-16
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Granted: 1971-08-10
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Expires: 1987-10-16
Abstract
Abstract DIBENZOCYCLOHEPTATRIEN AND DIBENZOCYCLOHEPTADIENE DERIVATIVES OF THE FORMULA: 2-HOOC-CH(-R)-,10,11-DI-R''-10,11-DIHYDRO-5H-DIBENZO(A,D)- CYCLOHEPTENE WHEREIN R IS HYDROGEN OR METHYL AND THE SYMBOLS R'' EACH REPRESENT HYDROGEN OR TOGETHER FORM A SINGLE BOND, AND PHARMACEUTICALLY-ACCEPTABLE SALTS THEREOF, ARE USEFUL AS ANTI-FLAMMATORY AGENTS.
Inventors
- 👤 Jean Clement Louis Fouche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:08
CPC Classifications
C; C07; C07C; C07C57/00; C07C57/46; C07C57/50
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |