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US3475415A
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Process for the preparation of 1,3-dihydro-2-oxo-5-aryl - 2h - 1,4 benzodiazepines bearing in the 3-position thereof,an esterified carboxy group
Assignee: F Hoffmann La Roche AG
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Filing: 1966-12-05
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Granted: 1969-10-28
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Expires: 1986-12-05
Abstract
No abstract record available.
Inventors
- 👤 Joseph Hellerbach
- 👤 Arthur Stempel
- 👤 Leo Henryk Sternbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:57
CPC Classifications
C; C07; C07D; C07D243/00; C07D243/06; C07D243/10; C07D243/14; C07D243/16; C07D243/18; C07D243/24; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3311612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |