US3734829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fermentative preparation of l-arginine
Assignee: Tanabe Pharma Corp
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Filing: 1971-12-13
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Granted: 1973-05-22
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Expires: 1991-12-13
Abstract
Abstract AN ARGININE HYDROXAMATE-RESISTANT MUTANT OF BACILLUS SUBTILIS IS CULTIVATED IN AN AQUUUEOUS NUTRIENT MEDIUM UNDER AEROBIC CONDITIONS. 1 TO 5 W./V. PERCENT OF GLUTAMIC ACID MAY BE OPTIONALLY ADDED TO THE MEDIUM. THE CULTIVATION IS PREFERABLY CARRIED OUT AT ABOUT 25* TO 37* C. AND AT A PH OF 6 TO 9. L-ARGININE IS REMOVED FROM THE FERMENTATION BROTH.
Inventors
- 👤 I Chibata
- 👤 M Kisumi
- 👤 J Kato
- 👤 M Sugiura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:32
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/10; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/839
Claims Analysis
Total Claims: 0
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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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |