Patent US2783254A successfully refreshed from Google Patents.
US2783254A
Expired / Lapsed
US
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Process for the manufacture of 17alpha-hydroxycorticosterone and intermediates obtained thereby
Assignee: Merck Sharp & Dohme LLC
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Filing: 1952-09-08
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Granted: 1957-02-26
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Expires: 1972-09-08
Abstract
No abstract record available.
Inventors
- 👤 David H Gould
- 👤 Eugene P Oliveto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:04
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
9 words
A SATURATED ALLOPOREGNAN-11B,17A, 21-TRIOL-3,20-DIOME21-ESTER OF A LOWER ALKANOIC ACID.
References Cited (Backward Citations)
US2409043A
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US2312483A
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US2359772A
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US2401775A
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US2596562A
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US2596563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |