US3574845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anthelmintic compositions and methods employing esters of benzimidazolyl carbamic acids and their thio analogs
Assignee: Smith Kline & French Laboratories Ltd
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Filing: 1966-07-01
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Granted: 1971-04-13
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Expires: 1986-07-01
Abstract
Abstract ANTHELMINITIC COMPOSITIONS COMPRISING ESTERS OF BENZIMIDAZOLYL CARBAMIC ACIDS, AND THEIR THIO ANALOGS, BOTH OF WHICH MAY BE OPTIONALLY SUBSTITUTED ON THE BENZENE RING, ARE DISCLOSED. A PROCESS FOR THEIR PREPARATION INVOLVES REACTING CYANAMIDE IN A SUITABLE ORGANIC SOLVENT WITH THE APPROPRIAW ALKYL SUBSTITUTED HALOFORMATE TO FORM A CYANOCARBAMATE, FOLLOWED BY THE ADDITION OF AN O-PHENYLENEDIAMINE TO YIELD THE DESCIRBED ANTHELMINTIC AGENTS.
Inventors
- 👤 Philip Paul Actor
- 👤 Joseph Frank Pagano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:56
CPC Classifications
A; A61; A61K; A61K31/00; C; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/24; C07D235/30; C07D235/32
Claims Analysis
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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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |