Granted Patent
Utility
US 5,776,548 · App. 08/743,874
Primer for promoting adhesion of polyurethane to a metal oxide coating
Inventors:
Thomas G. Rukavina, Robert M. Hunia
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Nov 5, 1996
Inventors
Thomas G. Rukavina
Robert M. Hunia
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.