Patent US3585221A successfully refreshed from Google Patents.
US3585221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
25-hydroxyergocalciferol
Assignee: Wisconsin Alumni Research Foundation
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Filing: 1969-03-24
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Granted: 1971-06-15
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Expires: 1989-03-24
Abstract
Abstract 1-(HO-C(-CH3)2-CH(-CH3)-CH=CH-CH(-CH3)-),4-((2-(CH2=),5- HO-CYCLOHEXYLIDENE)=CH-CH=),7A-CH3-INDAN 25-HYDROXYEGOCALCIFEROL. THE COMPOUND IS CHARACTERIZED BY VITAMIN-D-LIKE ACTIVITY AND IS THEREFORE SUITABLE AS AN ANIMAL FEED SUPPLEMENT.
Inventors
- 👤 Hector F De Luca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:19
CPC Classifications
C; C07; C07J; C07J9/00
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |