US3041247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing l-isoleucine
Assignee: Individual
•
Filing: 1960-04-07
•
Granted: 1962-06-26
•
Expires: 1980-04-07
Abstract
No abstract record available.
Inventors
- 👤 Shimura Kensuke
- 👤 Uemura Teijiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:47
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/06; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/836; Y10S435/837; Y10S435/839
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR PRODUCING L-ISOLEUCINE WHICH COMPRISES ADDING 0.005-1.5% BY VOLUME, BASED ON THE VOLUME OF THE MEDIUM, OF DL-A-AMINOBUTYRIC ACID TO A SYNTHETIC MEDIUM CONTAINING CARBON SOURCE, NITROGEN SOURCE AND INORGANIC MATTERS AND CULTURING A MICRO-ORGANISM BELONGING TO A SPACIES SELECTED FROM THE CLASS CONSISTING OF BACILLUS SUBTILLIS, BACILLUS MEGATERIUM AND BACILLUS LICHENIFORMIS ON THE SAID MEDIUM AT PH VALUES OF 5.5 TO 8.5, AT 25 TO 35*C. FOR FROM 1 TO 6 DAYS, WHEREBY L-ISOLEUCINE IS PRODUCED IN THE PRESENCE OF DL-A-AMINO BUTYRIC ACID AND ACCUMULATED IN THE MEDIUM, THE ISOLEUCINE THUS ACCUMULATED BEING THEN ISOLATED.
Claim 2
Dependent Claim
98 words
A PROCESS FOR PRODUCING L-ISOLEUCINE WHICH COMPRISES ADDING 0.005-1.5% BY VOLUME, BASED ON THE VOLUME OF THE MEDIUM, OF DL-A-AMINOBUTYRIC ACID TO A SYNTHETIC MEDIUM CONTAINING CARBON SOURCE, NITROGEN SOURCE AND INORGANIC MATTERS AND CULTURING A MICRO-ORGANISM BELONGING TO A SPACIES SELECTED FROM THE CLASS CONSISTING OF BACILLUS SUBTILLIS, BACILLUS MEGATERIUM AND BACILLUS LICHENIFORMIS ON THE SAID MEDIUM AT PH VALUES OF 5.5 TO 8.5, AT 25 TO 35*C. FOR FROM 1 TO 6 DAYS, WHEREBY L-ISOLEUCINE IS PRODUCED IN THE PRESENCE OF DL-A-AMINO BUTYRIC ACID AND ACCUMULATED IN THE MEDIUM, THE ISOLEUCINE THUS ACCUMULATED BEING THEN ISOLATED.
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) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |