US2935508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benzimidazole derivatives and processes for preparing the same
Assignee: Merck and Co Inc
•
Filing: 1956-11-23
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Granted: 1960-05-03
•
Expires: 1976-11-23
Abstract
No abstract record available.
Inventors
- 👤 Clifford H Shunk
- 👤 Karl A Folkers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:05
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
4,5,6-(5,6,7)-TRIHALO-1 - (TRIACYL - D - RIBOFURANOSYL)BENZIMIDAZOLE.
Claim 2
Dependent Claim
7 words
4,5,6-(5,6,7)-TRIHALO-1 - (TRIACYL - D - RIBOFURANOSYL)BENZIMIDAZOLE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |