US3767685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel 11beta-halo-steroids of the oestrane series
Assignee: Akzona Inc
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Filing: 1972-02-02
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Granted: 1973-10-23
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Expires: 1992-02-02
Abstract
Abstract THE PRESENT INVENTION RELATES TO NOVEL $4-3-DESOXO-11BHALO-STERIODS OF THE OESTRENE SERIES AND TO A PROCESS FOR THE PREPARATION THEREOF, WHICH COMPOUNDS HAVE VERY STRONG PRGESTATIONAL, OVULATION-INHIBITING, ANABOLIC, ANDROGENIC AND GONAD-INHIBITING PROPERTIES.
Inventors
- 👤 Vliet N Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:55
CPC Classifications
C; C07; C07J; C07J11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |