US2715602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of vitamin b12
Assignee: Individual
•
Filing: 1951-08-31
•
Granted: 1955-08-16
•
Expires: 1971-08-31
Abstract
No abstract record available.
Inventors
- 👤 Robert E Hargrove
- 👤 Leviton Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:06
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/26; C12P19/28; C12P19/42; A; A23; A23C; A23C19/00; A23C19/02; A23C19/032; A23C19/0321; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A PROCESS FOR THE PRODUCTION OF VITAMIN B12 COMPRISING INOCULATING BACTERIA OF THE GENUS PROPIONIBACTERIUM IN A GROWTH MEDIUM CONTAINING COBALT.
Claim 2
Dependent Claim
21 words
A PROCESS FOR THE PRODUCTION OF VITAMIN B12 COMPRISING INOCULATING BACTERIA OF THE GENUS PROPIONIBACTERIUM IN A GROWTH MEDIUM CONTAINING COBALT.
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) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |