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Patent US2814631A successfully refreshed from Google Patents.
US2814631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steroid compounds
Assignee: Merck Sharp & Dohme LLC
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Filing: 1957-01-14
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Granted: 1957-11-26
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Expires: 1977-01-14
Abstract
No abstract record available.
Inventors
- 👤 David H Gould
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:54
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
PREGNATRIENES HAVING THE FOLLOWING FORMULA::
Claim 2
Dependent Claim
5 words
PREGNATRIENES HAVING THE FOLLOWING FORMULA::
References Cited (Backward Citations)
US2736734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |