US2778776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of 21 hydroxy steroids
Assignee: CIBA PHARMACENTICAL PRODUCTS I
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Filing: 1955-06-29
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Granted: 1957-01-22
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Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 Wettstein Albert
- 👤 Vischer Ernst
- 👤 Meystre Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:38
CPC Classifications
C; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
IN A PROCESS FOR THE PRODUCTION OD 21-HYDROXYLATED PERGNANE COMPOUNDS, THE STEP WHICH COMPRISES SUBJECTING A COMPOUND OF THE PREGNANE SERIES, IN WHICH COMPOUND THE 21 POSITION IS UNSUBSTITUTED, TO THE ACTION OF ENZYMES PRODUCED BY AEROBICALLY CULTIVATING A FUNGUS SELECTED FROM THE GROUP CONSISTING OF THE OPHIOBOLUS HERPOTRICHUS AND SCLEROTINIA FRUCTICOLA, AND SEPARATING THE RESULTANT 21-HYDROXYLATED STERIOD.
Claim 2
Dependent Claim
58 words
IN A PROCESS FOR THE PRODUCTION OD 21-HYDROXYLATED PERGNANE COMPOUNDS, THE STEP WHICH COMPRISES SUBJECTING A COMPOUND OF THE PREGNANE SERIES, IN WHICH COMPOUND THE 21 POSITION IS UNSUBSTITUTED, TO THE ACTION OF ENZYMES PRODUCED BY AEROBICALLY CULTIVATING A FUNGUS SELECTED FROM THE GROUP CONSISTING OF THE OPHIOBOLUS HERPOTRICHUS AND SCLEROTINIA FRUCTICOLA, AND SEPARATING THE RESULTANT 21-HYDROXYLATED STERIOD.
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) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |