US3929575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing glutamic acid by fermentation
Assignee: Commercial Solvents Corp
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Filing: 1974-10-02
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Granted: 1975-12-30
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Expires: 1994-10-02
Abstract
Abstract An improved method of producing glutamic acid by fermentation whereby rapid growth of the glutamic acid-producing organism is promoted at the start of the fermentation by the steps of using ammonium acetate in the medium and maintaining the CO2 content of the exhaust air at a concentration of 6.5% or less.
Inventors
- 👤 Guido M Miescher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:30
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/14; Y; Y10; Y10S; Y10S435/00; Y10S435/813; Y10S435/8215; Y10S435/822; Y10S435/84
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
69 words
IN A PROCESS FOR THE PRODUCTION OF GLUTAMIC ACID BY CULTIVATING THE GLUTAMIC-ACID PRODUCING ORGANISM BREVIBACTERIUM DIVARICATUM OR A NUTRIENT FERMENATATION MEDIUM CONSISTING OF A CARBON SOURCE, A NITROGEN SOURCE, ESSENTIALLY MINERALS AND A GROWTH FACTOR, WHILE MAINTAINING THE CARBON DIOXIDE CONCENTRATION IN THE EXHAUST GAS BELOW 6.5% DURING THE FERMENTATION, THE IMPROVEMENT CONSISTING OF USING AMMONIUM ACETATE IN THE MEDIUM AT A CONCENTRATION OF 3-7 G PER LITER.
Claim 2
Dependent Claim
69 words
IN A PROCESS FOR THE PRODUCTION OF GLUTAMIC ACID BY CULTIVATING THE GLUTAMIC-ACID PRODUCING ORGANISM BREVIBACTERIUM DIVARICATUM OR A NUTRIENT FERMENATATION MEDIUM CONSISTING OF A CARBON SOURCE, A NITROGEN SOURCE, ESSENTIALLY MINERALS AND A GROWTH FACTOR, WHILE MAINTAINING THE CARBON DIOXIDE CONCENTRATION IN THE EXHAUST GAS BELOW 6.5% DURING THE FERMENTATION, THE IMPROVEMENT CONSISTING OF USING AMMONIUM ACETATE IN THE MEDIUM AT A CONCENTRATION OF 3-7 G PER LITER.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein the concentration of ammonium acetate is about 5 g per liter.
References Cited (Backward Citations)
US3766010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |