Granted Patent
Utility
US 5,204,469 · App. 07/725,650
Process for the preparation of an n-phenylacetic derivative of tetrahydrothieno(3,2-c)pyridine and its chemical intermediate
Inventors:
Marcel Descamps, Joel Radisson
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Jul 3, 1991
Inventors
Marcel Descamps
Joel Radisson
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.