Granted Patent
Utility
US 4,426,533 · App. 06/362,580
Process for producing bismethine isoindolines
Inventors:
Alain C. Rochat, Luigi Cassar
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Mar 29, 1982
Inventors
Alain C. Rochat
Luigi Cassar
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.