US2530627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of n-acyl allothreonine esters
Assignee: Merck and Co Inc
•
Filing: 1948-07-02
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Granted: 1950-11-21
•
Expires: 1968-07-02
Abstract
No abstract record available.
Inventors
- 👤 Pfister Karl
- 👤 Tishler Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:11
CPC Classifications
C; C07; C07C; C07C229/00; C07C229/02; C07C229/34; C07C229/04; C07C229/06; C07C229/08; C12; C12P; C12P13/00; C12P13/04; C12P13/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
16 words
THE PROCESS FOR PREPARING DERIVATAIVES OF ALLOTHREONINE WHICH COMPRISES REACTING A COMPOUND REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
16 words
THE PROCESS FOR PREPARING DERIVATAIVES OF ALLOTHREONINE WHICH COMPRISES REACTING A COMPOUND REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
36 words
THE PROCESS THAT COMPRISES REACTING ETHYLA-BENZOYLAMIDO-B-KETOBUTYRATE WITH HYDROGEN IN THE PRESENCE OF PLATINUM OXIDE CATALYST TO PRODUCE A MIXTURE OF STEROISOMERIC RACEMATES OF ETHYL A-BENZOYLAMIDO-B-HYDROXY BUTYRATE CONTAINING A PREPONDERANT AMOUNT OF THE ETHYL ESTER OF N-BENZOYL-DL-ALLOTHREONINE.
Claim 4
Dependent Claim
36 words
THE PROCESS THAT COMPRISES REACTING ETHYLA-BENZOYLAMIDO-B-KETOBUTYRATE WITH HYDROGEN IN THE PRESENCE OF PLATINUM OXIDE CATALYST TO PRODUCE A MIXTURE OF STEROISOMERIC RACEMATES OF ETHYL A-BENZOYLAMIDO-B-HYDROXY BUTYRATE CONTAINING A PREPONDERANT AMOUNT OF THE ETHYL ESTER OF N-BENZOYL-DL-ALLOTHREONINE.
References Cited (Backward Citations)
DE364038C
Cited
US2446651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |