Granted Patent
Utility
US 4,900,725 · App. 07/138,847
Steroids including a spiro ring in position 17, the process for their preparation and their use
Inventors:
Francois Nioue, Lucien Nedelec, Daniel Philibert, Martine Moguilewsky
Patented Case
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Granted: Feb 13, 1990
Filed: Nov 25, 1987
Inventors
Francois Nioue
Lucien Nedelec
Daniel Philibert
Martine Moguilewsky
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.