US3590045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain substituted imidazo (4,5-b)pyridines
Assignee: Smith Kline & French Laboratories Ltd
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Filing: 1969-09-25
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Granted: 1971-06-29
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Expires: 1989-09-25
Abstract
Abstract NOVEL 2-ACYLAMINOIMIDAZO (4,5-B) PYRIDINES, WHICH MAY BE OPTIONALLY SUBSTITUTED ON THE PYRIDINE NUCLEUS HAVING ACTIVITY AGAINST HELMINTHIASIS IN ANIMALS ARE DISCLOSED. A PROCESS FOR THEIR PREPARATION INVOLVES REACTING AN OPTIONALLY SUBSTITUTED O-DIAMINOPYRIDINE WITH AN ACYLS-LOWER ALKYL PSEUDOTHIOUREA.
Inventors
- 👤 Berthold Richard Vogt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:02
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |