US2714599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of 3-hydroxysteroids
Assignee: Pharmacia and Upjohn Co
•
Filing: 1952-07-16
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Granted: 1955-08-02
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Expires: 1972-07-16
Abstract
No abstract record available.
Inventors
- 👤 Gunther S Fonken
- 👤 Robert H Levin
- 👤 Jr A Vern Mcintosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:03
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS WHICH COMPRISES: CONTACTING A SATURATED SECONDARY-HYDROXY-STEROID WITH AN ORGANIC HYPOCHLORITE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS TO CONVERT THE SECONDARY-HYDROXY GROUP TO A KETO GROUP
Claim 2
Dependent Claim
25 words
A PROCESS WHICH COMPRISES: CONTACTING A SATURATED SECONDARY-HYDROXY-STEROID WITH AN ORGANIC HYPOCHLORITE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS TO CONVERT THE SECONDARY-HYDROXY GROUP TO A KETO GROUP
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) | 1958-08-01 | 1959-01-31 | 1959-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-01 | 1963-01-31 | 1963-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-01 | 1967-01-31 | 1967-08-02 | $7700.00 | Window Closed / Lapsed |