US2586154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Racemization of amino acid
Assignee: EIDP Inc
•
Filing: 1950-06-29
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Granted: 1952-02-19
•
Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert D Emmick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:18
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/487; C12; C12P; C12P13/00; C12P13/04; C12P13/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
PROCESS FOR THE RACEMIZATION OF LYSINE WHICH COMPRISES HEATING OPTICALLY ACTIVE LYSINE IN COMBINATION WITH PHOSPHORIC ACID.
Claim 2
Dependent Claim
17 words
PROCESS FOR THE RACEMIZATION OF LYSINE WHICH COMPRISES HEATING OPTICALLY ACTIVE LYSINE IN COMBINATION WITH PHOSPHORIC ACID.
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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |