US2951016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of delta1, 4-steroids
Assignee: Merck Sharp & Dohme LLC
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Filing: 1955-05-10
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Granted: 1960-08-30
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Expires: 1975-05-10
Abstract
No abstract record available.
Inventors
- 👤 Charney William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:03
CPC Classifications
C; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
PROCESS FOR THE MANUFACTURE OF $1,4-PREGNADIENE9A-Y-11-X-17A-OL-21-OR-3,20-DIONES WHICH COMPRISES SUBJECTING A PREGNENE COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
15 words
PROCESS FOR THE MANUFACTURE OF $1,4-PREGNADIENE9A-Y-11-X-17A-OL-21-OR-3,20-DIONES WHICH COMPRISES SUBJECTING A PREGNENE COMPOUND OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |