US2773867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dehalogenating steroids
Assignee: Akzo Nobel Paints LLC
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Filing: 1954-05-17
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Granted: 1956-12-11
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Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Percy L Julian
- 👤 Jerome G Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:46
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE PROCESS WHICH COMPRISES TREATING A SOLUTION OF A STEROID SELECTED FROM THE CLASS CONSISTING OF 5A,6B-DICHLORO STEROIDS OF THE ALLOPREGNANE SERIES, 5,6-DIBROMO STEROIDS OF THE ALLOPREGNANE SERIES, 5,6-DIBROMO STEROIDS OF THE PREGNANE SERIES AND 16-BROMO-17 A-HYDROXY-*5 PREGNENES WITH HYDROGEN IN THE PRESENCE OF A CATALYST SELECTED FORM THE CLAS CONSISTING OF RANEY NICKEL AND PALLADIUM ON AN ALKALINE EARTH METAL CARBONATE UNTIL AND 5,6 AND 16 HALOGEN SUBSTITUENTS ARE REMOVED.
Claim 2
Dependent Claim
71 words
THE PROCESS WHICH COMPRISES TREATING A SOLUTION OF A STEROID SELECTED FROM THE CLASS CONSISTING OF 5A,6B-DICHLORO STEROIDS OF THE ALLOPREGNANE SERIES, 5,6-DIBROMO STEROIDS OF THE ALLOPREGNANE SERIES, 5,6-DIBROMO STEROIDS OF THE PREGNANE SERIES AND 16-BROMO-17 A-HYDROXY-*5 PREGNENES WITH HYDROGEN IN THE PRESENCE OF A CATALYST SELECTED FORM THE CLAS CONSISTING OF RANEY NICKEL AND PALLADIUM ON AN ALKALINE EARTH METAL CARBONATE UNTIL AND 5,6 AND 16 HALOGEN SUBSTITUENTS ARE REMOVED.
References Cited (Backward Citations)
US2343311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |