Patent US2972534A successfully refreshed from Google Patents.
US2951017A
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Cobalamin producing fermentation process
Assignee: Distillers Co Yeast Ltd
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Filing: 1958-09-16
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Granted: 1960-08-30
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Expires: 1978-09-16
Abstract
No abstract record available.
Inventors
- 👤 Speedie John Douglas
- 👤 Hull Geoffrey William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:22
CPC Classifications
C; C07; C07H; C07H23/00; C12; C12P; C12P19/00; C12P19/26; C12P19/28; C12P19/42; Y; Y10; Y10S; Y10S435/00; Y10S435/801; Y10S435/813; Y10S435/8215; Y10S435/822
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR THE PRODUCTION OF COBALAMINS COMPRISING FERMENTING A SUITABLE LIQUID NUTRIENT MEDIUM WITH A COBALAMIN-PRODUCING SPECIES OF THE GENUS PROPIONIBACTERIUM INITIALLY UNDER ANAEROBIC CONDITIONS AND THEREAFTER CONTINUING THE FERMENTATION WHILE CONTACTING THE MEDIUM WITH OXYGEN.
Claim 2
Dependent Claim
37 words
A PROCESS FOR THE PRODUCTION OF COBALAMINS COMPRISING FERMENTING A SUITABLE LIQUID NUTRIENT MEDIUM WITH A COBALAMIN-PRODUCING SPECIES OF THE GENUS PROPIONIBACTERIUM INITIALLY UNDER ANAEROBIC CONDITIONS AND THEREAFTER CONTINUING THE FERMENTATION WHILE CONTACTING THE MEDIUM WITH OXYGEN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |