US2650232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-methyl-3-amino-4,5-di-hydroxymethylpyridine and its salts and the preparation thereof
Assignee: Eli Lilly and Co
•
Filing: 1950-10-21
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Granted: 1953-08-25
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Expires: 1970-10-21
Abstract
No abstract record available.
Inventors
- 👤 Reuben G Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:00
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/73; C07D213/78; C07D213/79; C07D213/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A MEMBER OF THE GROUP CONSISTING OF A BASE AND ITS ACID ADDITION SALTS, SAID BASE BEING REPRESENTED BY THE FOLLOWING FORMULA
Claim 2
Dependent Claim
22 words
A MEMBER OF THE GROUP CONSISTING OF A BASE AND ITS ACID ADDITION SALTS, SAID BASE BEING REPRESENTED BY THE FOLLOWING 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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |