Patent US3839347A successfully refreshed from Google Patents.
US3839347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-aminobenzimidazoles
Assignee: Merck and Co Inc
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Filing: 1972-01-07
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Granted: 1974-10-01
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Expires: 1992-01-07
Abstract
Abstract 1. A COMPOUND HAVING THE FORMULA: 1-(R7-C(-R8)=N-),2-R2,5-R5,6-R6-BENZIMIDAZOLE WHEREIN R2 IS THIAZOLYL; ONE OF R7 AND R8 IS HYDROGEN AND THE OTHER IS CARBOY AND THE ALKALI METAL, ALKALINE EARTH METAL, AND THE AMMONIA, ETHANOLAMINE, DIETHANOLAMINE, GUANIDINE, ARGININE, LYSINE, ETHYLENEDIAMINE, PIPERAZINE, AND MORPHOLINE SALTS THEREOF; AND R5 AND R6 ARE HYDROGEN OR: R1-C(=X)-NH- SUCH THAT WHEN X IS OXYGEN, R1 IS LOWERALKOXY OR PHENYL; AND WHEN X IS SULFUR, R1 IS LOWERALKOXY, PHENYL OR PYRROLIDINO.
Inventors
- 👤 R Bochis
- 👤 C Rooney
- 👤 M Fisher
- 👤 B Linn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:37
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/24; C07D235/30; C07D235/32; C07D235/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND 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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |