US2992972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steroids
Assignee: Pharmacia and Upjohn Co
•
Filing: 1958-03-03
•
Granted: 1961-07-18
•
Expires: 1978-03-03
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Murray
- 👤 Durey H Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:44
CPC Classifications
C; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR THE PRODUCTION OF AN 11,17A,21-TRIHYDROXY-4-PREGNENE-3,20-DIONE ESTER COMPRISING AEROBICALLY CONTACTING 17A,21 - DIHYDROXY - 4 - PRGNENE - 3,20DIONE WITH THE OXYGENATING ACTIVITY OF A SPECIES OF FUNGUS OF THE ORDER MUCORALES TO PRODUCE 11,17A,21-TRIHYDROXY4-PREGNENE-3,20-DIONE AND REACTING THE THUS-PRODUCED 11,17A,21-TRIHYDROXY-4-PREGNENE-3,20-DIONE WITH AN ACYLATING AGENT TO PRODUCE AN ESTER OF 11,17A,21-TRIHYDROXY4-PREGNENE-3,20-DIONE.
Claim 2
Dependent Claim
52 words
A PROCESS FOR THE PRODUCTION OF AN 11,17A,21-TRIHYDROXY-4-PREGNENE-3,20-DIONE ESTER COMPRISING AEROBICALLY CONTACTING 17A,21 - DIHYDROXY - 4 - PRGNENE - 3,20DIONE WITH THE OXYGENATING ACTIVITY OF A SPECIES OF FUNGUS OF THE ORDER MUCORALES TO PRODUCE 11,17A,21-TRIHYDROXY4-PREGNENE-3,20-DIONE AND REACTING THE THUS-PRODUCED 11,17A,21-TRIHYDROXY-4-PREGNENE-3,20-DIONE WITH AN ACYLATING AGENT TO PRODUCE AN ESTER OF 11,17A,21-TRIHYDROXY4-PREGNENE-3,20-DIONE.
References Cited (Backward Citations)
US2602769A
Cited
US2861088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |