US3761464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardio active pyranosides of 3beta-hydroxy-4-chloro carda-4,20(22)-dienolides
Assignee: Hoechst AG
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Filing: 1971-01-25
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Granted: 1973-09-25
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Expires: 1991-01-25
Abstract
Abstract CARDIO-ACTIVE PYRANOSIDES OF 3B-HYDROXY-4-CHLORO-CARDA-4,20(22)-DIENOLIDES AND PROCESS FOR THEIR MANUFACTURE BY REACTING CORRESPONDING 3B-HYDROXY STEROIDS WITH ACYLATED-1-HALOGENO-PYRANOSES IN THE PRESENCE OF SILVER CARBONATE.
Inventors
- 👤 K Radscheit
- 👤 W Haede
- 👤 E Lindner
- 👤 U Stache
- 👤 W Fritsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:32
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/58; A61K31/585; C; C07; C07J; C07J19/00
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |