Granted Patent
Utility
US 4,602,087 · App. 06/611,819
Distyrylbiphenyls
Inventors:
Christian Luthi, Hans R. Meyer, Kurt Weber
Patented Case
View Patent ↗
Granted: Jul 22, 1986
Filed: May 18, 1984
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.