US2672467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of 6-hydroxy-11-keto-progesterone
Assignee: Pharmacia and Upjohn Co
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Filing: 1952-03-25
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Granted: 1954-03-16
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Expires: 1972-03-25
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Hanze
- 👤 Ogilvie Robert Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:08
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A PROCESS FOR THE PREPARATION OF 6-HYDROXY11-KETO-PROGESTERONE COMPRISING REACTING 6,11DIHYDROXYPROGESTERONE WITH ABOUT TWO EQUIVALENTS OF OXIDIZING AGENT PER MOL OF 6,11-DIHYDROXYPROGESTERONE.
Claim 2
Dependent Claim
21 words
A PROCESS FOR THE PREPARATION OF 6-HYDROXY11-KETO-PROGESTERONE COMPRISING REACTING 6,11DIHYDROXYPROGESTERONE WITH ABOUT TWO EQUIVALENTS OF OXIDIZING AGENT PER MOL OF 6,11-DIHYDROXYPROGESTERONE.
References Cited (Backward Citations)
US2403683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |