US3850944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-(3'-pyridyl)-2-mercaptoimidazole and derivatives thereof
Assignee: Kaken Pharmaceutical Co Ltd
•
Filing: 1973-07-27
•
Granted: 1974-11-26
•
Expires: 1993-07-27
Abstract
Abstract 1. 5-(3''-PYRIDYL)-2-MERCAPTIOMIDAZOLE AND DERIVATIVES THEREOF HAVING THE FORMULA 2-(H-S-),3-R,4-(PYRID-3-YL-)-IMIDAZOLE WHEREIN R REPRESENTS HYDROGEN, LOWER ALKYL, ALLYL, PHENYL, A LOWER ALKYL SUBSTITUTED PHENYL GROUP, LOWER ALKOXY OR A HALOGEN ATOM.
Inventors
- 👤 M Tanaka
- 👤 K Amemiya
- 👤 K Saga
- 👤 K Ohtsuka
- 👤 M Obata
- 👤 S Kano
- 👤 T Kumada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:16
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
5-(3''-PYRIDYL)-2-MERCAPTIOMIDAZOLE AND DERIVATIVES THEREOF HAVING THE FORMULA
Claim 2
Dependent Claim
7 words
5-(3''-PYRIDYL)-2-MERCAPTIOMIDAZOLE AND DERIVATIVES THEREOF HAVING THE FORMULA
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |