Patent US4743959A successfully refreshed from Google Patents.
Patent US2867637A successfully refreshed from Google Patents.
US2867637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6alpha methyl, 9alpha f, 17alpha oh 1, 4 pregnadiene compounds
Assignee: Pharmacia and Upjohn Co
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Filing: 1957-05-17
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Granted: 1959-01-06
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Expires: 1977-05-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank H Lincoln
- 👤 William P Schneider
- 👤 George B Spero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:21
CPC Classifications
C; C07; C07J; C07J7/00; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 6-METHYL-9A-FLUORO-11B,17A-DIHYDROXY-1,4 - PREGNADIENE3,20-DIONE AND 6-METHYL-9A-FLUORO-17A-HYDROXY-1,4-PREGNADIENE-3,11,20-TRIONE.
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 6-METHYL-9A-FLUORO-11B,17A-DIHYDROXY-1,4 - PREGNADIENE3,20-DIONE AND 6-METHYL-9A-FLUORO-17A-HYDROXY-1,4-PREGNADIENE-3,11,20-TRIONE.
References Cited (Backward Citations)
US2763671A
Cited
US2814632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |