Patent US2830936A successfully refreshed from Google Patents.
US2830936A
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11beta-hydroxylation of 11-methylene steroids with dothichiza
Assignee: Pfizer Inc
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Filing: 1956-12-17
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Granted: 1958-04-15
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Donald A Kita
- 👤 Gilbert M Shull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:32
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
38 words
A PROCESS FOR THE 11B-HYDROXYLATION OF A STEROID COMPOUND HAVING AN 11-POSITION METHYLENE GROUP AND CONTAINING FROM 18 TO 21 CARBON ATOMS IN THE SKELETON, WHICH COMPRISES CONTACTING SAID STEROID COMPOUND WITH THE OXYGENATING ACTIVITY OF DOTHICHIZA FERRUGINOSA.
Claim 2
Dependent Claim
38 words
A PROCESS FOR THE 11B-HYDROXYLATION OF A STEROID COMPOUND HAVING AN 11-POSITION METHYLENE GROUP AND CONTAINING FROM 18 TO 21 CARBON ATOMS IN THE SKELETON, WHICH COMPRISES CONTACTING SAID STEROID COMPOUND WITH THE OXYGENATING ACTIVITY OF DOTHICHIZA FERRUGINOSA.
References Cited (Backward Citations)
US2649401A
Cited
US2602769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |