US3563857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing l-glutamic acid by fermentation
Assignee: Ajinomoto Co Inc
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Filing: 1968-03-15
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Granted: 1971-02-16
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Expires: 1988-03-15
Abstract
Abstract MANY YEASTS AND BACTERIA ARE CAPABLE OF GROWTH ON OTHERWISE CONVENTIONAL CULTURE MEDIA WHICH CONTAIN ETHANOL AS THE PRINCIPAL SOURCE OF CARBON, AND PRODUCE L-GLUTAMIC ACID WHICH MAY BE RECOVERED IN COMMERCIALLY USEFUL AMOUNTS. THE MEDIUM SHOULD CONTAIN NO MORE THAN 10% ETHANOL FOR GOOD YIELDS, AND THE ETHANOL CONTENT MAY BE REPLENISHED BY MIXING THE ETHANOL WITH THE AERATION GAS.
Inventors
- 👤 Toshikazu Oki
- 👤 Yukio Nishimura
- 👤 Yoshio Sayama
- 👤 Hisao Takemi
- 👤 Atsuo Kitai
- 👤 Asaichiro Ozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:44
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/14; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/828; Y10S435/829; Y10S435/83; Y10S435/84; Y10S435/859; Y10S435/863; Y10S435/866; Y10S435/874; Y10S435/911; Y10S435/921; Y10S435/923; Y10S435/94; Y10S435/942; Y10S435/944
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |