Granted Patent
Utility
US 5,116,987 · App. 07/763,202
Method of preparing chroman derivatives, and synthesis intermediates
Inventors:
Georges Garcia, Daniel Mettefeu, Richard Roux
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Sep 20, 1991
Inventors
Georges Garcia
Daniel Mettefeu
Richard Roux
Assignee (at issue)
Sanofi
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.