US2676904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical method for introduction of 11-hydroxyl substituents into steroids
Assignee: GD Searle LLC
•
Filing: 1950-11-29
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Granted: 1954-04-27
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Expires: 1970-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jeanloz Roger
- 👤 Hechter Oscar
- 👤 Pincus Gregory
- 👤 Schenker Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:03
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
THE METHOD OF INTRODCING AN 11-HYDROXYL SUBSTITUENT INTO A STEROID CONTAINING AN 11-METHYLENE GROUP WHICH COMPRISES MIXING SAID STEROID WITH A BREI MADE FROM THE ADRENAL CORTEX AND SUBJECTING THE RESULTANT MIXTURE TO THE CARBON OF OXYGEN.
Claim 2
Independent Claim
37 words
THE METHOD OF INTRODCING AN 11-HYDROXYL SUBSTITUENT INTO A STEROID CONTAINING AN 11-METHYLENE GROUP WHICH COMPRISES MIXING SAID STEROID WITH A BREI MADE FROM THE ADRENAL CORTEX AND SUBJECTING THE RESULTANT MIXTURE TO THE CARBON OF OXYGEN.
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) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |