Granted Patent
Utility
US 5,612,416 · App. 08/541,993
Unsaturated hydroxy diester copolymers and their use in coating compositions
Inventors:
Gregory J. McCollum, Karl F. Schimmel, James A. Claar, Joseph M. Carney, Stephen J. Thomas, Leigh Ann Humbert
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Oct 10, 1995
Inventors
Gregory J. McCollum
Karl F. Schimmel
James A. Claar
Joseph M. Carney
Stephen J. Thomas
Leigh Ann Humbert
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.