US3349005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fermentation process for production of citric acid
Assignee: Bayer Corp
•
Filing: 1965-05-25
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Granted: 1967-10-24
•
Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Batti Mario Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:16
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/40; C12P7/44; C12P7/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A PROCESS FOR PRODUCING CITRIC ACID IN A CITRIC ACIDPRODUCING MEDIUM IN WHICH CITRIC ACID HAS BEHUN TO FORM RESULTING IN A PH OF LESS THAN ABOUT 3.0 AND WHEREIN THE RATE OF CITRIC ACID PRODUCTION IN SAID MEDIUM IS RETARDED BY THE PRESENCE IN SAID MEDIUM OF AN EXCESS AMOUNT OF AN INHIBITOR SELECTED FROM THE CLASS CONSISTING OF COPPER AND ORGANIC MATERIALS WHICH ARE TOXIC TO CITRIC ACID-PRODUCING FUNGI, SAID INHIBITOR INTENDED TO COUNTERACT THE UNDESIRABLE PRESENCE OF CONTAMINANTS IN SAID MEDIUM, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID FERMENTATION MEDIUM AN AMOUNT OF ALKALINE MATERIAL SUFFICIENT TO INCREASE THE PH OF SAID MEDUM TO A VALUE OF AT LEAST ABOUT 3.0 TO COUNTERACT THE RETARDING EFFECT OF SAID EXCESS AMOUNT OF INHIBITOR AND PROMOTE THE CIRTIC ACID-PRODUCING ACTIVITY IN SAID MEDIUM.
Claim 2
Dependent Claim
135 words
IN A PROCESS FOR PRODUCING CITRIC ACID IN A CITRIC ACIDPRODUCING MEDIUM IN WHICH CITRIC ACID HAS BEHUN TO FORM RESULTING IN A PH OF LESS THAN ABOUT 3.0 AND WHEREIN THE RATE OF CITRIC ACID PRODUCTION IN SAID MEDIUM IS RETARDED BY THE PRESENCE IN SAID MEDIUM OF AN EXCESS AMOUNT OF AN INHIBITOR SELECTED FROM THE CLASS CONSISTING OF COPPER AND ORGANIC MATERIALS WHICH ARE TOXIC TO CITRIC ACID-PRODUCING FUNGI, SAID INHIBITOR INTENDED TO COUNTERACT THE UNDESIRABLE PRESENCE OF CONTAMINANTS IN SAID MEDIUM, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID FERMENTATION MEDIUM AN AMOUNT OF ALKALINE MATERIAL SUFFICIENT TO INCREASE THE PH OF SAID MEDUM TO A VALUE OF AT LEAST ABOUT 3.0 TO COUNTERACT THE RETARDING EFFECT OF SAID EXCESS AMOUNT OF INHIBITOR AND PROMOTE THE CIRTIC ACID-PRODUCING ACTIVITY IN SAID MEDIUM.
References Cited (Backward Citations)
US3189527A
Cited
US3290227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |