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US2463885A
Expired / Lapsed
US
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N-methyl-1-glucosamine and acid salts thereof
Assignee: Merck and Co Inc
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Filing: 1946-02-09
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Granted: 1949-03-08
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Expires: 1966-02-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick A Kuehl
- 👤 Edwin H Flynn
- 👤 Folkers Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:13
CPC Classifications
C; C07; C07H; C07H5/00; C07H5/04; C07H5/06
Claims Analysis
Total Claims: 0
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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) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |