US2802775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
11 alpha-hydroxylation of steroids by aspergillus ochraceus
Assignee: Merck and Co Inc
•
Filing: 1953-05-29
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Granted: 1957-08-13
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Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Dulaney
- 👤 Mcaleer William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:58
CPC Classifications
C; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A PROCESS FOR THE PRODUCTION OF 11A-HYDROXY STEROIDS, WHICH COMPRISES SUBJECTING A STEROID HAVING AN ELEVEN METHYLENE GROUP TO THE ACTION OF AN OXYGENATING ENZYME PRODUCED BY AN OXYGENATING STRAIN OF ASPERGILLUS OCHRACEUS UNDER AEROBIC CONDITION.
Claim 2
Dependent Claim
36 words
A PROCESS FOR THE PRODUCTION OF 11A-HYDROXY STEROIDS, WHICH COMPRISES SUBJECTING A STEROID HAVING AN ELEVEN METHYLENE GROUP TO THE ACTION OF AN OXYGENATING ENZYME PRODUCED BY AN OXYGENATING STRAIN OF ASPERGILLUS OCHRACEUS UNDER AEROBIC CONDITION.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |