US3578565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of steroids of the androstane series
Assignee: F Hoffmann La Roche AG
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Filing: 1968-10-01
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Granted: 1971-05-11
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Expires: 1988-10-01
Abstract
Abstract MICROBIOLOGICAL PROCESS FOR PREPARING 17-OXYGENATED ANDROSTANES BY SUBJECTING 20-OXYGENATED PREGNANES TO THE ACTION OF A CULTURE OF THE FUNGUS GLIOCLADIUM ROSEUM. THE STEROIDS PREPARED ARE KNOW COMPOUNDS WHICH ARE PHARMACEUTICALLY USEFUL AS ANDROGENIC AGENTS AND AS INTERMEDIATES WHICH CAN BE CONVERTED TO KNOWN COMPOUNDS WHICH ARE PROGESTATIONAL AGENTS.
Inventors
- 👤 Arno Johannes Schocher
- 👤 Andor Furst
- 👤 Hans Els
- 👤 Elisabeth Becher
- 👤 Gisela Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:29
CPC Classifications
C; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |