Patent FR670161A successfully refreshed from Google Patents.
US2822318A
Expired / Lapsed
US
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Production of 3-keto-delta pregnadienes by bacterium cyclo-oxydans
Assignee: Olin Corp
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Filing: 1956-12-07
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Granted: 1958-02-04
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Expires: 1976-12-07
Abstract
No abstract record available.
Inventors
- 👤 Helen A Kroll
- 👤 Joseph F Pagano
- 👤 Richard W Thoma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:36
CPC Classifications
C; C12; C12P; C12P33/00; C12P33/02; C12P33/06; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A PROCESS FOR PREPARING A HYDROXYLATED STEROID OF THE 3-KETO-$1,4-PREGNADIENE SERIES, WHICH COMPRISES SUBJECTING A HYDROXYLATED STEROID OF THE 3-KETO-$4-PREGNENE SERIES OF THE ACTIONS OF ENZYMES OF BACTERIUM CYCLO-OXYDANS IN THE PRESENCE OF OXYGEN AND RECOVERING THE RESULTING DEHYDROGENATED STEROID.
Claim 2
Dependent Claim
40 words
A PROCESS FOR PREPARING A HYDROXYLATED STEROID OF THE 3-KETO-$1,4-PREGNADIENE SERIES, WHICH COMPRISES SUBJECTING A HYDROXYLATED STEROID OF THE 3-KETO-$4-PREGNENE SERIES OF THE ACTIONS OF ENZYMES OF BACTERIUM CYCLO-OXYDANS IN THE PRESENCE OF OXYGEN AND RECOVERING THE RESULTING DEHYDROGENATED STEROID.
References Cited (Backward Citations)
US2756179A
Cited
US2776927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |