Patent US3816443A successfully refreshed from Google Patents.
US3816443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-(benzothiazol-2-yl)fluoro phenyl-acetic acids
Assignee: Merck and Co Inc
•
Filing: 1972-02-17
•
Granted: 1974-06-11
•
Expires: 1992-02-17
Abstract
Abstract 4-(BENZOTHIAZOL-2-YL)PHENYLACETIC ACIDS, ESTERS AMIDES AND THE NONTOXIC PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF AND PROCESSES FOR THEIR PREPARATION ARE DESCRIBED. THE SUBSTITUTED 4-(BENZOTHIAZOL-2-YL)PHENYLACETIC ACIDS ARE USEFUL AS ANTI-INFLAMMATORY COMPOUNDS. IN GENERAL THEY ARE PREPARED BY CONDENSING AN O-AMINOTHIOPHENOL WITH A BENZOIC ACID CARRYING A PARA SUBSTITUENT CONVERTIBLE TO AN ACETIC ACID RESIDUE BY CONVENTIONAL TECHNIQUES.
Inventors
- 👤 C Dorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:21
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D277/66
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |