Patent US3021325A successfully refreshed from Google Patents.
US3021325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbamyl substituted 2, 3, 4, 5-tetrahydrobenzodiazepine compounds
Assignee: Bayer Corp
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Filing: 1959-04-15
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Granted: 1962-02-13
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Expires: 1979-04-15
Abstract
No abstract record available.
Inventors
- 👤 Otis E Fancher
- 👤 Dale A Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:16
CPC Classifications
C; C07; C07D; C07D243/00; C07D243/06; C07D243/10; C07D243/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
THE CARBAMYL SUBSTITUTED BENZODIAZEPINE DERIVATIVE OF THE FORMULA:
Claim 2
Dependent Claim
8 words
THE CARBAMYL SUBSTITUTED BENZODIAZEPINE DERIVATIVE OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |