Granted Patent
Utility
US 4,242,264 · App. 06/009,985
Tricyclic imidyl derivatives
Inventors:
Hans Zweifel, Walter Schilling, Angelo Storni, Daniel Bellus
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Feb 6, 1979
Inventors
Hans Zweifel
Walter Schilling
Angelo Storni
Daniel Bellus
Assignee (at issue)
Ciba-Geigy
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.