Patent US3652579A successfully refreshed from Google Patents.
US3652579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-methyl-2-substituted 5-nitroimidazoles
Assignee: F Hoffmann La Roche AG
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Filing: 1969-06-26
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Granted: 1972-03-28
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Expires: 1989-06-26
Abstract
Abstract NOVEL 1-METHYL-2-SUBSTITUTED 5-NITROIMIDAZOLES, NOVEL INTERMEDIATES THEREFOR AND PROCESSES FOR THEIR PRODUCTION ARE PROVIDED. THE END PRODUCTS, 1-METHYL-2-ISOPROPYL-5NITROIMIDAZOLE, 1-METHYL-2-(1METHYL-1-METHOXYETHYL)-5NITROIMIDAZOLE AND 1-METHYL-2-(1-METHYL - 1 - HYDROXYETHYL)-5-NITROIMIDAZOLE, ARE USEFUL IN THE TREATMENT OF PROTOZOAL AND BACTERIA INFECTIONS.
Inventors
- 👤 Max Hoffer
- 👤 Alexander Macdonald Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:41
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/64; C07D233/66; C07D233/68; C07D233/91; C07D233/92; C07D233/94
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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |