Granted Patent
Utility
US 4,440,694 · App. 06/262,001
Process for the production of vinylstilbene compounds
Inventors:
Daniel Bellus, Hans Blaser, Guglielmo Kabas, Dieter Reinehr, Alwyn Spencer, Kurt Weber
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: May 8, 1981
Inventors
Daniel Bellus
Hans Blaser
Guglielmo Kabas
Dieter Reinehr
Alwyn Spencer
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.