Patent US2887499A successfully refreshed from Google Patents.
US2887499A
Expired / Lapsed
US
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Hydroxylated steroid intermediates and methods for their manufacture
Assignee: Merck Sharp & Dohme LLC
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Filing: 1958-11-13
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Granted: 1959-05-19
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Expires: 1978-11-13
Abstract
No abstract record available.
Inventors
- 👤 Carvajal Fernando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:11
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOUNDS HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
5 words
COMPOUNDS HAVING THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US2816902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |