US3740413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-benzimidazolecarboxamides
Assignee: Wyeth LLC
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Filing: 1971-10-26
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Granted: 1973-06-19
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Expires: 1991-10-26
Abstract
Abstract THIS INVENTION RELATES TO SUBSTITUTED 2-BENZIMIDAZOLECARBOXAMIDES AND TO PROCESS FOR THEIR PRODUCTION COMPRISING THE REACTION OF A 2,2-DIHYDROXYACETAMIDE DIALKANOATE IN A SOLUTION OF 0-PHENYLENEDIAMINE. THE COMPOUNDS ARE PHARMACOLOGICALLY ACTIVE AS CENTRAL NERVOUS SYSTEM DEPRESSANT AGENTS.
Inventors
- 👤 Caully R Mc
- 👤 C Gochman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:50
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/24
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |