Patent US3022226A successfully refreshed from Google Patents.
US3022226A
Expired / Lapsed
US
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Process for preparing 1-dehydro steroids
Assignee: Olin Corp
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Filing: 1960-11-23
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Granted: 1962-02-20
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Expires: 1980-11-23
Abstract
No abstract record available.
Inventors
- 👤 John W Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:15
CPC Classifications
C; C12; C12P; C12P33/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR PREPARING A 1-DEHYDRO STEROID WHICH COMPRISES SUBJECTING UNDER AEROBIC CONDITIONS A STEROID OF THE 3,20-DIKETO-$4-PREGNENE SERIES TO THE ACTION OF A 1-DEHYDROGENASE ENZYME IN THE PRESENCE OF AN IODOACETATE COMPOUND SELECTED FROM THE GROUP CONSISTING OF IODOACETIC ACID, SALTS THEREOF AND ESTERS THEREOF, SAID IODOACETATE COMPOUND BEING PRESENT IN A MOLAR CONCENTRATION OF AT LEAST ABOUT 0.001.
Claim 2
Dependent Claim
60 words
A PROCESS FOR PREPARING A 1-DEHYDRO STEROID WHICH COMPRISES SUBJECTING UNDER AEROBIC CONDITIONS A STEROID OF THE 3,20-DIKETO-$4-PREGNENE SERIES TO THE ACTION OF A 1-DEHYDROGENASE ENZYME IN THE PRESENCE OF AN IODOACETATE COMPOUND SELECTED FROM THE GROUP CONSISTING OF IODOACETIC ACID, SALTS THEREOF AND ESTERS THEREOF, SAID IODOACETATE COMPOUND BEING PRESENT IN A MOLAR CONCENTRATION OF AT LEAST ABOUT 0.001.
References Cited (Backward Citations)
US2951016A
Cited
US2844513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |