Granted Patent
Utility
US 4,859,743 · App. 07/209,716
Urethane component for high solids coating compositions
Inventors:
Ronald R. Ambrose, James B. O'Dwyer, Byron K. Johnston, David P. Zielinski, Samuel Porter, Jr., Wayne H. Tyger
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Jun 22, 1988
Inventors
Ronald R. Ambrose
James B. O'Dwyer
Byron K. Johnston
David P. Zielinski
Samuel Porter, Jr.
Wayne H. Tyger
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.