Granted Patent
Utility
US 5,147,901 · App. 07/411,436
Propionphenone derivatives as photoinitiators for photopolymerization
Inventors:
Werner Rutsch, Rudolf Kirchmayr, Rinaldo Husler, Kurt Dietliker
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Sep 22, 1989
Inventors
Werner Rutsch
Rudolf Kirchmayr
Rinaldo Husler
Kurt Dietliker
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.