US3076823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of 6-chloro-3-keto-deta steroid compounds
Assignee: Roche Palo Alto LLC
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Filing: 1961-07-03
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Granted: 1963-02-05
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Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 Howard J Ringold
- 👤 Alvarez Francisco
- 👤 James C Orr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:59
CPC Classifications
C; C07; C07J; C07J7/00; C07J1/00; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR THE PRODUCTION OF 6-CHLORO-3-KETO-$4,6STERIODS SELECTED FROM THE GROUP CONSISTING OF THE ANDROSTANE AND PREGNANE SERIES COMPRISING REACTING THE CORRESPONDING 3-KETO-$4,6-STEROID WITH CHROMYL CHLORIDE AND THEREAFTER DEHYDRATING THE THUS FORMED 6B-CHLORO-7AHYDROXY-3-KETO-$4-STEROID WITH A STRONG ACID.
Claim 2
Dependent Claim
37 words
A PROCESS FOR THE PRODUCTION OF 6-CHLORO-3-KETO-$4,6STERIODS SELECTED FROM THE GROUP CONSISTING OF THE ANDROSTANE AND PREGNANE SERIES COMPRISING REACTING THE CORRESPONDING 3-KETO-$4,6-STEROID WITH CHROMYL CHLORIDE AND THEREAFTER DEHYDRATING THE THUS FORMED 6B-CHLORO-7AHYDROXY-3-KETO-$4-STEROID WITH A STRONG ACID.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |