US2874172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
11-oxygenated 1, 4, 16-pregnatriene-21-ol-3, 20 diones and esters thereof
Assignee: Merck Sharp & Dohme LLC
•
Filing: 1955-01-26
•
Granted: 1959-02-17
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Expires: 1975-01-26
Abstract
No abstract record available.
Inventors
- 👤 Hershel L Herzog
- 👤 Eugene P Oliveto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:08
CPC Classifications
C; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/843; Y10S435/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
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US2359772A
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US2369065A
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US2579479A
Cited
US2676904A
Cited
US2666016A
Cited
US2602769A
Cited
US2649402A
Cited
US2658023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |