Granted Patent
Utility
US 4,785,128 · App. 06/474,731
Process for the preparation of bis-styrylbenzenes
Inventor:
Leonardo Guglielmetti
Patented Case
View Patent ↗
Granted: Nov 15, 1988
Filed: Mar 18, 1983
Inventor
Leonardo Guglielmetti
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.