US2662883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of n-glycosides of 5, 6 dimethyl benzimidazoles
Assignee: Merck and Co Inc
•
Filing: 1950-05-03
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Granted: 1953-12-15
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Expires: 1970-05-03
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Holly
- 👤 Clifford H Shunk
- 👤 Folkers Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:37
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE PROCESS FOR PREPARING N-GLYCOSIDES OF 5,6-DIMETHYLBENZIMIDAZOLE HAVING THE FORMULA:
Claim 2
Dependent Claim
10 words
THE PROCESS FOR PREPARING N-GLYCOSIDES OF 5,6-DIMETHYLBENZIMIDAZOLE HAVING THE FORMULA:
References Cited (Backward Citations)
DE281008C
Cited
US2522854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |