Granted Patent
Utility
US 4,680,346 · App. 06/808,762
Flexible primer composition and method of providing a substrate with a flexible multilayer coating
Inventors:
Dennis W. Carson, Robert J. Schmitt, Carl Seneker, Thomas A. Van Kuren, David R. Wallace
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Dec 13, 1985
Inventors
Dennis W. Carson
Robert J. Schmitt
Carl Seneker
Thomas A. Van Kuren
David R. Wallace
Assignee (at issue)
PPG Industries, 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.