Patent US3759943A successfully refreshed from Google Patents.
US3759943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amido and amino triazolo benzodiazepines
Assignee: Pharmacia and Upjohn Co
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Filing: 1971-04-28
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Granted: 1973-09-18
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Expires: 1991-04-28
Abstract
Abstract WHEREIN R1, R2, R3, R4, and R5 are defined as above and R is alkyl of one to three carbon atoms, inclusive. WHEREIN R'' and R'''' are hydrogen, alkyl of one to three carbon atoms, inclusive, or together Compounds of the formula:
Inventors
- 👤 J Hester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:29
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
N,N-dimethyl-8-chloro-6-phenyl-4H-s-triazolo(4,3-a)-(1, 4)benzodiazepine-1-acetamide.
Claim 2
Dependent Claim
2 words
N,N-dimethyl-8-chloro-6-(o-chlorophenyl)-4H-s-triazolo-(4,3 -a)(1,4)benzodiazepine-1-acetamide.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |