Patent US3414564A successfully refreshed from Google Patents.
US3414564A
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US
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Process for the production of 17-ethylidene steroids
Assignee: F Hoffmann La Roche AG
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Filing: 1966-03-03
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Granted: 1968-12-03
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Expires: 1986-03-03
Abstract
No abstract record available.
Inventors
- 👤 Krubiner Alan Martin
- 👤 Oliveto Eugene Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:55
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/015; H02B1/04; H02B1/044; H02B1/048; C; C07; C07D; C07D317/00; C07D317/08; C07D317/72; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3301880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |