US2945029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of 3alpha-acetoxy-17alpha-hydroxy-16alpha-methyl-delta9(11)-pregnene-20-one and intermediates
Assignee: Laboratoires Francais de Chimiotherapie SA
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Filing: 1959-12-31
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Granted: 1960-07-12
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Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 Nomine Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:38
CPC Classifications
C; C07; C07J; C07J71/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
3A - ACETOXY - 16 - METHYL - 20 - DIOXOLANE - $**16PREGNENE-11-ONE.
Claim 2
Dependent Claim
13 words
3A - ACETOXY - 16 - METHYL - 20 - DIOXOLANE - $**16PREGNENE-11-ONE.
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) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |