Patent US2901492A successfully refreshed from Google Patents.
US2901492A
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US
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16,20-diketo steroids and process for preparing same
Assignee: Olin Corp
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Filing: 1954-08-31
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Granted: 1959-08-25
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Expires: 1974-08-31
Abstract
No abstract record available.
Inventors
- 👤 Josef E Herz
- 👤 Fried Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:14
CPC Classifications
C; C07; C07J; C07J5/00; C07J5/0007; C07J5/0023; C07J1/00; C07J1/0003; C07J1/0007; C07J3/00; C07J3/005; C07J7/00; C07J7/0005; C07J7/001; C07J7/0015; C07J7/0025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
A PROCESS OF OXIDIZING A 16-HYDROXY STERIOD WHICH COMPRISES REACTING A 16-HYDROXY STERIOD OF THE GENERAL FORMULA
Claim 2
Dependent Claim
17 words
A PROCESS OF OXIDIZING A 16-HYDROXY STERIOD WHICH COMPRISES REACTING A 16-HYDROXY STERIOD OF THE GENERAL FORMULA
Claim 3
Dependent Claim
6 words
A STERIOD OF THE GENERAL FORMULA
Claim 4
Dependent Claim
6 words
A STERIOD OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2304837A
Cited
US2727907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |