US3579499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino alkyl esters of 5beta-pregn-20-ene-21-carboxylic acids and the 3-glycosides thereof
Assignee: Imperial Chemical Industries Ltd
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Filing: 1968-07-01
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Granted: 1971-05-18
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Expires: 1988-07-01
Abstract
Abstract THE DISCLOSURE RELATES TO AMINOALKYL ESTERS OF 5B-PREGN20-ENE-21-CARBOXYLIC ACIDS, PROCESSES FOR THEIR MANUFACTURE, PHARMACEUTICAL COMPOSITIONS CONTAINING THEM AND A METHOD OF USING THEM TO INCREASE THE FORCE OF CONTRACTION OF THE HEART OF WARM-BLOODED ANIMALS. REPRESENTATIVE OF THE STEROID DERIVATIVES DISCLOSED IS 2-DIMETHYLAMINOETHYL 3B-14B-DIHYDROXY-5B-PREGN-20-ENE - 21 - CARBOXYLATE.
Inventors
- 👤 Richard Clarkson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/57; A61K31/573; A61K31/565; A61K31/568
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |