Patent US3703522A successfully refreshed from Google Patents.
US3703522A
Expired / Lapsed
US
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Carbostyril derivatives
Assignee: Janssen Pharmaceuticals Inc
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Filing: 1970-03-27
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Granted: 1972-11-21
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Expires: 1990-03-27
Abstract
Abstract THE COMPOUNDS HEREIN ARE 3,4-DIHYDRO-4-METHYL-4PHENYL-6-CHLORO-CARBOSTYRIL DERIVATIVES, USEFUL FOR THEIR VARIOUS PHARMACOLOGICAL ACTIVITIES, SUCH AS ANTI-INFLAMMATORY, HYPOTENSIVE AND CENTRAL NERVOUS SYSTEM DEPRESSANT ACTIVITIES. ALSO INCLUDED HEREIN IS 4''-CHLORO-B-METHYLCINNAMANILIDE, USEFUL IN THE SYNTHESIS OF THE SUBJECT CARBOSTYRILS.
Inventors
- 👤 Janis Plostnieks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:52
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/22; C07D215/227
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |