US3812103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,3-dihydro-1,4-benzodiazepines
Assignee: F Hoffmann La Roche AG
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Filing: 1967-04-11
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Granted: 1974-05-21
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Expires: 1987-04-11
Abstract
Abstract 1,4-BENZODIAZEPINES WHICH ARE SUBSTITUTED IN THE 1POSITION WITH A CARBOXAMIDE OR THIOCARBONXAMIDE RADICAL AND METHODS FOR THEIR PREPARATION. THE 1,4-BENZODIAZEPINES WHICH ARE SUBSTITUTED IN THE 1-POSITION WITH A THIOCARBOXYAMIDE RADICAL ARE USEFUL AS AN ANTICONVULSANT, WHEREAS THE 1,4-BENZODIAZEPINES WHICH ARE SUBSTITUTED IN THE 1-POSITION WITH A CARBOXAMIDE RADICAL ARE USEFUL AS MUSCLE RELAXANTS, PSYCHOSEDATIVES, HYPONTICS, SEDATIVES, ANTICONVULSANTS, AND ANALOGESICS.
Inventors
- 👤 W Metlesics
- 👤 L Sternbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:34
CPC Classifications
A; A61; A61K; A61K31/00
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |