US3010994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of glutamic acid from acrylonitrile
Assignee: Ajinomoto Co Inc
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Filing: 1956-08-22
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Granted: 1961-11-28
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Expires: 1976-08-22
Abstract
No abstract record available.
Inventors
- 👤 Iwanaga Ryoji
- 👤 Iwamoto Isamu
- 👤 Yoshida Toichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:04
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A SYNTHETIC PROCESS FOR PRODUCING GLUTAMIC ACID FROM ACRYLONITRILE IN WHICH ARYLONITRILE IS HYDROFORMYLATED IN BENZENE SOLUTION WITH CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A COBALT CATALYST, TO PRODUCE B-CYANPROPION ALDEHYDE, AND THE REACTION MIXTURE CONTAINING THE B-CYANPROPION ALDEHYDE IS THEREUPON TREATED WITH HYDROGEN CYANIDE AND AMMONIA, AND FINALLY HYDROLYZED WITH CAUSTIC ALKALI WHEREBY GLUTAMIC ACID IS PRODUCED.
Claim 2
Dependent Claim
60 words
A SYNTHETIC PROCESS FOR PRODUCING GLUTAMIC ACID FROM ACRYLONITRILE IN WHICH ARYLONITRILE IS HYDROFORMYLATED IN BENZENE SOLUTION WITH CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A COBALT CATALYST, TO PRODUCE B-CYANPROPION ALDEHYDE, AND THE REACTION MIXTURE CONTAINING THE B-CYANPROPION ALDEHYDE IS THEREUPON TREATED WITH HYDROGEN CYANIDE AND AMMONIA, AND FINALLY HYDROLYZED WITH CAUSTIC ALKALI WHEREBY GLUTAMIC ACID IS PRODUCED.
References Cited (Backward Citations)
DE839801C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |