US2937975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steroid halohydrins and process therefor
Assignee: Pfizer Inc
•
Filing: 1958-08-18
•
Granted: 1960-05-24
•
Expires: 1978-08-18
Abstract
No abstract record available.
Inventors
- 👤 Sanford K Figdor
- 👤 Gerald D Laubach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:18
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
16 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF $4-3-KETOSTEROID HALOHYDRINS HAVING THE FOLLOWING GENERAL STRUCTURAL FORMULA:
Claim 2
Dependent Claim
16 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF $4-3-KETOSTEROID HALOHYDRINS HAVING THE FOLLOWING GENERAL STRUCTURAL FORMULA:
Claim 3
Dependent Claim
17 words
A PHARMACEUTICAL COMPOSITION COMPRISING A COMPOUND AS CLAIMED IN CLAIM 1 AND A PHARMACEUTICALLY ACCEPTABLE INERT CARRIER.
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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |