Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › 2,2:6,6-diethylen-3-oxo-17alpha-pregn-4-ene-21,17alpha-carbolactones, process for their production & pharmaceutical preparations containing them

2,2:6,6-diethylen-3-oxo-17alpha-pregn-4-ene-21,17alpha-carbolactones, process for their production & pharmaceutical preparations containing them

US Patent 4868166 · Granted Sep 19, 1989

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Cytotoxic agents that preferentially target leukemia inhibitory factor (LIF) for2020
Longer-acting progestin prodrug contraceptives2020
Pro-drug forming compounds2019
Cytotoxic agents that preferentially target leukemia inhibitory factor (LIF) for2018
Combination of estrogens plus antiprogestins with significant partial agonistic 2017
Pro-drug forming compounds2017
Imidazolyl progesterone antagonists2015
Progesterone antagonists2014
18-methyl-19-nor-17-pregn-4-ene-21,17-carbolactones, as well as pharmaceutical p2013
Methods for the preparation of drospirenone2012
Progestational 3-(6,6-ethylene-17B-hydroxy-3-oxo-17A-pregna-4-ene-17A-yl)propion2012
Nicotinamide pyridinureas as vascular endothelial growth factor (VEGF) receptor 2011