Granted Patent
Utility
US 4,295,663 · App. 06/181,016
3-Indolyl-3-bis-amino-phenyl-phthalide compounds
Inventors:
Jean C. Petitpierre, Robert Garner
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: Aug 25, 1980
Inventors
Jean C. Petitpierre
Robert Garner
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.