Granted Patent
Utility
US 4,861,916 · App. 06/948,305
Photoinitiators for photopolymerization of unsaturated systems
Inventors:
Manfred Kohler, Jorg Ohngemach, Gregor Wehner, Jurgen Gehlhaus
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Dec 3, 1986
Inventors
Manfred Kohler
Jorg Ohngemach
Gregor Wehner
Jurgen Gehlhaus
Assignee (at issue)
Merck Patent GmbH
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.