Granted Patent
Utility
US 5,091,388 · App. 07/533,416
Pyridobenzoindole derivatives, their preparation and compositions which contain them
Inventors:
Emile Bisagni, Chi Nguyen
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Jun 5, 1990
Inventors
Emile Bisagni
Chi Nguyen
Assignee (at issue)
Rhone-Poulenc Sante
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.