Granted Patent
Utility
US 4,434,035 · App. 06/481,971
Mixtures of aromatic-aliphatic ketones as photoinitiators and photopolymerizable systems containing them
Inventors:
J/u/ rgen Eichler, Claus P. Herz, Karl-Heinz Neisius
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Apr 4, 1983
Inventors
J/u/ rgen Eichler
Claus P. Herz
Karl-Heinz Neisius
Assignee (at issue)
MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG
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.