US3021262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of cobalamins
Assignee: Olin Corp
•
Filing: 1958-12-11
•
Granted: 1962-02-13
•
Expires: 1978-12-11
Abstract
No abstract record available.
Inventors
- 👤 Perlman David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:55
CPC Classifications
C; C07; C07H; C07H23/00; C12; C12P; C12P19/00; C12P19/26; C12P19/28; C12P19/42; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/853; Y10S435/886; Y10S435/889
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR PREPARING A PHYSIOLOGICALLY ACTIVE COBALAMIN, WHICH COMPRISES CULTURING A VITAMIN B12 PRODUCING MICROORGANISM IN A COBALT-DEFICIENT NUTRIENT MEDIUM, SEPARATING THE CELLS FROM THE MEDIUM, TREATING THE SEPARATED CELLS WITH A UTILIZABLE SOURCE OF COBALT,
Claim 2
Dependent Claim
37 words
A PROCESS FOR PREPARING A PHYSIOLOGICALLY ACTIVE COBALAMIN, WHICH COMPRISES CULTURING A VITAMIN B12 PRODUCING MICROORGANISM IN A COBALT-DEFICIENT NUTRIENT MEDIUM, SEPARATING THE CELLS FROM THE MEDIUM, TREATING THE SEPARATED CELLS WITH A UTILIZABLE SOURCE OF COBALT,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |