Granted Patent
Utility
US 4,424,366 · App. 06/349,420
Tricyclic imidyl derivatives
Inventors:
Hans Zweifel, Walter Schilling, Angelo Storni, Daniel Bellus
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Feb 16, 1982
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.