Patent US3183170A successfully refreshed from Google Patents.
US3183170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of l-amino acid manufacture
Assignee: Sanraku Ocean Co Ltd
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Filing: 1962-08-20
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Granted: 1965-05-11
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Expires: 1982-08-20
Abstract
No abstract record available.
Inventors
- 👤 Kitai Atsuo
- 👤 Kitamura Iwao
- 👤 Miyachi Noboru
- 👤 Ozaki Asaichiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:58
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A METHOD OF MANUFACTURING L-AMINO, WHICH COMPRISES REACTING L-GLUTAMIC ACID AND A KETO ACID THAT IS TRANSFORMED INTO THE AMINO ACID IN THE PRESENCE OF: (A) L-GLUTAMIC DEHYDROGENASE, (B) HYDROGENASE, SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF CELLS OF MICROBES WHICH ARE STRONGLY ACTIVE AS HYDROGENASE AND REFINED PREPARATIONS AND EXTRACTS THEREOF, (C) TRANSAMINASE, SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF MICROBES WHICH ARE STRONGLY ACTIVE AS TRANSAMINASE, ANIMAL HEART, KIDNEY, LIVER AND MUSCLE, VEGETABLE TISSUE AND PREPARATIONS OBTAINED FROM SAID TRANSAMINASE SUBSTANCES, (D) A DYE WHICH ACTS AS A HYDROGEN ACCEPTOR SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF METHYL VIOLOGEN, BENZYL VIOLOGEN, AND JANUS GREEN, (E) ELECTRON TRANSPORT SYSTEM, SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF CYTOCHROMES, FLAVIN ENZYMES, DEHYDROGENASE AND THE COFACTORS THEREOF, (F) HYDROGEN GAS IN CONCENTRATION SUFFICIENT TO CAUSE THE EQUILIBRIUM TO SHIFT IN FAVOR OF THE FOMATION OF SAID L-AMINO ACID, AND (G) A COMPOUND ACTING AS A NITROGEN SOURCE, WHICH IS SELECTED FROM THE GROUP CONSISTING OF ORGANIC AMMONIUM SALTS, INORGANIC AMMONIUM SALTS, AMMONIUM HYDROXIDE, AMMONIA GAS AND UREA.
Claim 2
Independent Claim
191 words
A METHOD OF MANUFACTURING L-AMINO, WHICH COMPRISES REACTING L-GLUTAMIC ACID AND A KETO ACID THAT IS TRANSFORMED INTO THE AMINO ACID IN THE PRESENCE OF: (A) L-GLUTAMIC DEHYDROGENASE, (B) HYDROGENASE, SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF CELLS OF MICROBES WHICH ARE STRONGLY ACTIVE AS HYDROGENASE AND REFINED PREPARATIONS AND EXTRACTS THEREOF, (C) TRANSAMINASE, SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF MICROBES WHICH ARE STRONGLY ACTIVE AS TRANSAMINASE, ANIMAL HEART, KIDNEY, LIVER AND MUSCLE, VEGETABLE TISSUE AND PREPARATIONS OBTAINED FROM SAID TRANSAMINASE SUBSTANCES, (D) A DYE WHICH ACTS AS A HYDROGEN ACCEPTOR SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF METHYL VIOLOGEN, BENZYL VIOLOGEN, AND JANUS GREEN, (E) ELECTRON TRANSPORT SYSTEM, SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF CYTOCHROMES, FLAVIN ENZYMES, DEHYDROGENASE AND THE COFACTORS THEREOF, (F) HYDROGEN GAS IN CONCENTRATION SUFFICIENT TO CAUSE THE EQUILIBRIUM TO SHIFT IN FAVOR OF THE FOMATION OF SAID L-AMINO ACID, AND (G) A COMPOUND ACTING AS A NITROGEN SOURCE, WHICH IS SELECTED FROM THE GROUP CONSISTING OF ORGANIC AMMONIUM SALTS, INORGANIC AMMONIUM SALTS, AMMONIUM HYDROXIDE, AMMONIA GAS AND UREA.
References Cited (Backward Citations)
US2749279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |