US3077482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
19-oxygenated steroids and process for their manufacture
Assignee: BASF Corp
•
Filing: 1961-07-10
•
Granted: 1963-02-12
•
Expires: 1981-07-10
Abstract
No abstract record available.
Inventors
- 👤 Wettstein Albert
- 👤 Anner Georg
- 👤 Heusler Karl
- 👤 Kalvoda Jaroslav
- 👤 Ueberwasser Hellmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:46
CPC Classifications
C; C07; C07J; C07J5/00; C07J1/00; C07J19/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
57 words
PROCESS FOR THE MANUFACTURE OF 19-OXYGENATED STEROIDE, CONSISTING OF TREATING A $4-3-OXO-6B:19-OXIFOSTEROID WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF A METALLIC REDUCING AGENT AND A CHROMIUM II SALT AND ISOMERIZING ANY RESULTING $5-3-OXO-STEROID INTO A $3 3-OXO-STEROID BY THE ACTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACIDIC AGENT AND AN ALKALINE AGENT.
Claim 2
Dependent Claim
57 words
PROCESS FOR THE MANUFACTURE OF 19-OXYGENATED STEROIDE, CONSISTING OF TREATING A $4-3-OXO-6B:19-OXIFOSTEROID WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF A METALLIC REDUCING AGENT AND A CHROMIUM II SALT AND ISOMERIZING ANY RESULTING $5-3-OXO-STEROID INTO A $3 3-OXO-STEROID BY THE ACTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACIDIC AGENT AND AN ALKALINE AGENT.
Claim 3
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |