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US3766010A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for controlling fermentation process

Assignee: Ajinomoto Co Inc
•
Filing: 1972-08-16
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Granted: 1973-10-16
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Expires: 1992-08-16
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Abstract

Abstract In a fermentation medium, in which an organic acid is consumed as a carbon source by a microorganism and is added to the medium at a rate to maintain a set pH value, the concentration of the acid is held within limits required for optimum fermentation conditions by varying the concentration of bicarbonate ions in the medium. The bicarbonate concentration is increased at excessive organic acid concentration by increasing the partial pressure of carbon dioxide in the fermentation vessel or by raising the set pH limit at which the organic acid is fed to the medium. The bicarbonate concentration is reduced at insufficient organic acid concentration by decreasing the partial carbon dioxide pressure in the fermentation vessel or by lowering the set pH limit.

Inventors

  • 👤 S Ikeda
  • 👤 Zaki A Ishi
  • 👤 Y Hirose

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 17:04
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/52; C12N9/54; C12N1/00; C12N1/20; C12P; C12P13/00; C12P13/04; C12P13/08; C12P13/14

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 35 words
In a method as set forth in claim 1, said concentration of bicarbonate ions being increased and decreased by varying the partial pressure of carbon dioxide in a gaseous phase in contact with said medium.
Claim 2
Dependent Claim 22 words
In a method as set forth in claim 1, said concentration of bicarbonate ions being increased and decreased by varying the pH.
Claim 3
Dependent Claim 27 words
In a method as set forth in claim 1, said organic acid being acetic acid, fumaric acid, malic acid, gluconic acid, benzoic acid, or a fatty acid.

References Cited (Backward Citations)

US3121669A Cited
US3582471A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-10-15 1977-04-16 1977-10-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-15 1981-04-16 1981-10-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-15 1985-04-16 1985-10-16 $7700.00 Window Closed / Lapsed

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