US3706830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,4-benzodiazepines used as antihypertensive agents
Assignee: Novartis Corp
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Filing: 1970-04-16
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Granted: 1972-12-19
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Expires: 1990-04-16
Abstract
Abstract 4,5-DIHYDRO-1H-2,4-BENZODIAZEPINES, E.G. THOSE OF THE FORMULA 3-R'',(R)N-4,5-DIHYDRO-1H-2,4-BENZODIAZEPINE R=H, ALKYL, FREE, ETHERIFIED OR ESTERIFIED OH OR SH, CF1, NO2 OR AMINO;N=1 OR 2 R''=H, OH, SH, AMINO OR AN ALIPHATIC, ARALIPHATIC R AROMATIC RADICAL ACYL DERIVATIVES, N-OXIDES, QUATERNARIES OR SALTS THEREOF, ARE ANTIHYPERTENSIVES AND INCREASE THE CONTRACTILE FORCE OF THE HEART.
Inventors
- 👤 Herman Robert Rodriguez
- 👤 George De Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:44
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/55
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |