US2919285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 5alpha-pregnane-3, 20-dione from funtumine
Assignee: GD Searle LLC
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Filing: 1958-11-03
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Granted: 1959-12-29
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Expires: 1978-11-03
Abstract
No abstract record available.
Inventors
- 👤 Pappo Raphael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
IN THE PROCESS FOR THE PREPARATION OF 5A-PREGNANE3,20-DIONE, THE STEPS WHICH CONSISTS OF MIXING 3A-AMINO5A-PREGNAN-20-ONE WITH OSMIUM TETROXIDE.
Claim 2
Dependent Claim
18 words
IN THE PROCESS FOR THE PREPARATION OF 5A-PREGNANE3,20-DIONE, THE STEPS WHICH CONSISTS OF MIXING 3A-AMINO5A-PREGNAN-20-ONE WITH OSMIUM TETROXIDE.
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) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |