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Patent US3250793A successfully refreshed from Google Patents.
US3250793A
Expired / Lapsed
US
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17alpha-halogenated hydrocarbon derivatives of estra-4, 9-diene 3beta, 17-diols
Assignee: Merck and Co Inc
•
Filing: 1963-06-19
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Granted: 1966-05-10
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Expires: 1983-06-19
Abstract
No abstract record available.
Inventors
- 👤 Fried John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:47
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/565; A61K31/567; C; C07; C07J; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
17-ACETOXY-17 A-TRIFLUOROVINYL-ESTRA-4,9-DIEN-3B-OL.
Claim 2
Dependent Claim
2 words
17-ACETOXY-17 A-TRIFLUOROVINYL-ESTRA-4,9-DIEN-3B-OL.
References Cited (Backward Citations)
US3126399A
Cited
US3086027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |