US3296093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing 10alpha-methyl steroids with sepedonium species
Assignee: DSM Delft BV
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Filing: 1963-10-15
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Granted: 1967-01-03
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Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Flines Jan De
- 👤 Waard Willem Frederik Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:24
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
89 words
A METHOD OF PRODUCING 10A-METHYL STEROIDS OXYGENATED AT THE 16 POSITION COMPRISING SUBJECTING A 10AMETHYL STEROID HAVING TWO HYDROGEN ATOMS AT THE 16 CARBON ATOM AND BEING FREE OF A 17A-HYDROXYL, SELECTED FROM THE GROUP CONSISTING OF 3-KETO-$4-10A-METHYL STEROIDS, 3-KETO-$4,6-10A-METHYL STEROIDS, 3-HYDROXY-$5-10AMETHYL STEROIDS AND FUNCTIONAL DERIVATIVES THEREOF IN THE 3 POSITION, TO THE ACTION OF A MICROORGANISM SELECTED FROM THE GROUP CONSISTING OF THE DEVELOPMENTAL STAGES OF THE SEPEDONIUM SPECIES, THE OXYGENATING ENZYME SYSTEMS THEREOF AND THE SPORES THEROF, AND RECOVERING SAID 10A-METHYL STEROIDS OXYGENATED AT THE 16 POSITION.
Claim 2
Independent Claim
89 words
A METHOD OF PRODUCING 10A-METHYL STEROIDS OXYGENATED AT THE 16 POSITION COMPRISING SUBJECTING A 10AMETHYL STEROID HAVING TWO HYDROGEN ATOMS AT THE 16 CARBON ATOM AND BEING FREE OF A 17A-HYDROXYL, SELECTED FROM THE GROUP CONSISTING OF 3-KETO-$4-10A-METHYL STEROIDS, 3-KETO-$4,6-10A-METHYL STEROIDS, 3-HYDROXY-$5-10AMETHYL STEROIDS AND FUNCTIONAL DERIVATIVES THEREOF IN THE 3 POSITION, TO THE ACTION OF A MICROORGANISM SELECTED FROM THE GROUP CONSISTING OF THE DEVELOPMENTAL STAGES OF THE SEPEDONIUM SPECIES, THE OXYGENATING ENZYME SYSTEMS THEREOF AND THE SPORES THEROF, AND RECOVERING SAID 10A-METHYL STEROIDS OXYGENATED AT THE 16 POSITION.
References Cited (Backward Citations)
US3007950A
Cited
US3011951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |