US2854452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 11-oxygenated nuclear-saturated steroids
Assignee: Pfizer Inc
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Filing: 1954-07-27
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Granted: 1958-09-30
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Expires: 1974-07-27
Abstract
No abstract record available.
Inventors
- 👤 Gerald D Laubach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:20
CPC Classifications
C; C07; C07J; C07J17/00; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A PROCESS FOR PREPARING AN 11-OXYGENATED NUCLEAR SATURATED STEROID, WHICH PROCESS COMPRISES REACTING A STEROID SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
21 words
A PROCESS FOR PREPARING AN 11-OXYGENATED NUCLEAR SATURATED STEROID, WHICH PROCESS COMPRISES REACTING A STEROID SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
FR848797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |