US3702330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imidazolyl acrylic acid derivatives
Assignee: Merck and Co Inc
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Filing: 1970-10-05
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Granted: 1972-11-07
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Expires: 1990-10-05
Abstract
Abstract 5-NITROIMIDAZOLYL-2-ACRYLIC ACID AND DERIVATIVES THEREOF ARE DISCLOSED AS WELL AS PROCESSES FOR THEIR PREPARATION FROM 5-NITROIMIDAZOLYL-2-CARBOXALDEHYDE AND MALONIC ACID. SAID 5-NITROIMIDAZOLYL ACRYLIC ACID DERIVATIVES ARE ACTIVE AS ANTIPROTOZOAL AGENTS AND COMPOSITIONS WHICH ARE USEFUL FOR THE TREATMENT OF PROTOZOAL DISEASES CONTAINING SAID AGENTS ARE ALSO DISCLOSED.
Inventors
- 👤 Dale R Hoff
- 👤 Clarence S Rooney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:58
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/91; C07D233/92
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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |