Granted Patent
Utility
US 4,559,332 · App. 06/598,109
20-Spiroxanes and analogues having an open ring E, processes for their manufacture, and pharmaceutical preparations thereof
Inventors:
Jurgen Grob, Jaroslav Kalvoda
Patented Case
View Patent ↗
Granted: Dec 17, 1985
Filed: Apr 9, 1984
Inventors
Jurgen Grob
Jaroslav Kalvoda
Assignee (at issue)
Ciba-Geigy
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.