Granted Patent
Utility
US 4,748,167 · App. 06/636,754
Water-based coating compositions comprising epoxy-containing acrylic polymers an polyfunctional water-soluble amines
Inventors:
Suryya K. Das, Kurt G. Olson, James A. Claar
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: Aug 1, 1984
Inventors
Suryya K. Das
Kurt G. Olson
James A. Claar
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.