Granted Patent
Utility
US 5,965,680 · App. 08/758,610
Optical resin composition from polyol((meth)acryloyl carbonate) monomer
Inventors:
Robert D. Herold, Charles R. Wiedrich, Ajay Parkhe, Christopher D. Selvig, Robert A. Smith
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Nov 27, 1996
Inventors
Robert D. Herold
Charles R. Wiedrich
Ajay Parkhe
Christopher D. Selvig
Robert A. Smith
Assignee (at issue)
PPG Industries Ohio, Inc.
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.