Patent US2672468A successfully refreshed from Google Patents.
US2672468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6-hydroxy-11-keto-progesterone and esters thereof
Assignee: Pharmacia and Upjohn Co
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Filing: 1952-04-01
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Granted: 1954-03-16
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Expires: 1972-04-01
Abstract
No abstract record available.
Inventors
- 👤 Ogilvie Robert Bruce
- 👤 Arthur R Hanze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 6-HYDROXY-11-KETO-PROGESTERONE AND 6ACYLOXY-11-KETOPROGESTERONE WHEREIN ACYLOXY IS A HYDROCARBON-CARBONYLOXY RADICAL CONTAINING FROM ONE TO EIGHT CARBON ATOMS INCLUSIVELY.
Claim 2
Dependent Claim
25 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 6-HYDROXY-11-KETO-PROGESTERONE AND 6ACYLOXY-11-KETOPROGESTERONE WHEREIN ACYLOXY IS A HYDROCARBON-CARBONYLOXY RADICAL CONTAINING FROM ONE TO EIGHT CARBON ATOMS INCLUSIVELY.
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 |