Granted Patent
Utility
US 4,591,518 · App. 06/639,874
Acrylic functional urethane alkyd resin coating compositions
Inventors:
William J. Schillinger, J. Alden Erikson, Rostyslaw Dowbenko, Roger M. Christenson
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Aug 13, 1984
Inventors
William J. Schillinger
J. Alden Erikson
Rostyslaw Dowbenko
Roger M. Christenson
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.