Patent US2762841A successfully refreshed from Google Patents.
US2762841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing l-glutamine
Assignee: International Minerals and Chemical Corp
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Filing: 1954-08-06
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Granted: 1956-09-11
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Expires: 1974-08-06
Abstract
No abstract record available.
Inventors
- 👤 Vassel Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:44
CPC Classifications
C; C07; C07C; C07C237/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A PROCESS FOR THE PRODUCTION OF L-GLUTAMINE WHICH COMPRISES TREATING THE GAMMA-AMIDE OF AN N-CARBOALLYLOXY-L-GLUTAMIC ACID HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
20 words
A PROCESS FOR THE PRODUCTION OF L-GLUTAMINE WHICH COMPRISES TREATING THE GAMMA-AMIDE OF AN N-CARBOALLYLOXY-L-GLUTAMIC ACID HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2523744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |