Patent US2905592A successfully refreshed from Google Patents.
US2905592A
Expired / Lapsed
US
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Oxidation of steroids by mycobacteria
Assignee: Pfizer Inc
•
Filing: 1955-07-27
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Granted: 1959-09-22
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Expires: 1975-07-27
Abstract
No abstract record available.
Inventors
- 👤 Gilbert M Shull
- 👤 Donald A Kita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:00
CPC Classifications
C; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/863; Y10S435/866; Y10S435/867; Y10S435/869
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2602769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |