US3083144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing citric acid by fermentation
Assignee: Bayer Corp
•
Filing: 1960-04-04
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Granted: 1963-03-26
•
Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Merrick W Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:20
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/40; C12P7/44; C12P7/48; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN A PROCESS FOR THE PRODUCTION OF CITRIC ACID WHICH COMPRISES SUBJECTING A CARBONHYDRATE TO FERMENTATION WITH A CITRIC ACID PRODUCING STRAIN OF A FUNGUS IN THE PRESENCE OF NUTRIENTS FOR SAID FUNGUS, SAID NUTRIENTS INCLUDING A NITROGEN NUTRIENT, THE IMPROVEMENT WHICH COMPRISES ADDING TO THE FERMENTATION BROTH A QUANTITY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND AMMONIUM SALTS AS A NITROGEN CONTAINING NUTIENT EFFECTIVE
Claim 2
Dependent Claim
69 words
IN A PROCESS FOR THE PRODUCTION OF CITRIC ACID WHICH COMPRISES SUBJECTING A CARBONHYDRATE TO FERMENTATION WITH A CITRIC ACID PRODUCING STRAIN OF A FUNGUS IN THE PRESENCE OF NUTRIENTS FOR SAID FUNGUS, SAID NUTRIENTS INCLUDING A NITROGEN NUTRIENT, THE IMPROVEMENT WHICH COMPRISES ADDING TO THE FERMENTATION BROTH A QUANTITY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND AMMONIUM SALTS AS A NITROGEN CONTAINING NUTIENT EFFECTIVE
References Cited (Backward Citations)
US2394031A
Cited
US2910409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |