Granted Patent
Utility
US 6,486,228 · App. 09/820,105
Mono-and Bis-acylphosphine oxide photoinitiator combinations
Inventors:
Manfred Kohler, Jean-Pierre Wolf, Andre Litzler, Guido Tolotti, Nils Hoeck
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: Mar 28, 2001
Inventors
Manfred Kohler
Jean-Pierre Wolf
Andre Litzler
Guido Tolotti
Nils Hoeck
Assignee (at issue)
Ciba Specialty Chemicals Corporation
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.