US2866736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective reduction of ketosteroids with yeast
Assignee: Pfizer Italia SRL
•
Filing: 1954-08-12
•
Granted: 1958-12-30
•
Expires: 1974-08-12
Abstract
No abstract record available.
Inventors
- 👤 Camerino Bruno
- 👤 Vercellone Alberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:38
CPC Classifications
C; C12; C12P; C12P33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2264861A
Cited
US2184167A
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US2602769A
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US2702291A
Cited
US2686793A
Cited
US2658023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |