Granted Patent
Utility
US 4,950,795 · App. 07/233,399
Oligomeric benzil ketals and their use as photoinitiators
Inventors:
Rinaldo Husler, Rudolf Kirchmayr, Werner Rutsch, Manfred Rembold
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Aug 18, 1988
Inventors
Rinaldo Husler
Rudolf Kirchmayr
Werner Rutsch
Manfred Rembold
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.