Granted Patent
Utility
US 4,339,393 · App. 06/137,147
Distyrylbiphenyls
Inventors:
Christian Luthi, Hans R. Meyer, Kurt Weber
Patented Case
View Patent ↗
Granted: Jul 13, 1982
Filed: Apr 4, 1980
Inventors
Christian Luthi
Hans R. Meyer
Kurt Weber
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.