Granted Patent
Utility
US 5,384,419 · App. 08/071,199
Preparation process for 20-keto-21(S) hydroxy steroid compounds and intermediates
Inventors:
Jean Buendia, Jean-Yves Godard, Philippe Mackiewicz, Christian Richard
Patented Case
View Patent ↗
Granted: Jan 24, 1995
Filed: Jun 2, 1993
Inventors
Jean Buendia
Jean-Yves Godard
Philippe Mackiewicz
Christian Richard
Assignee (at issue)
Roussel Uclaf
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.