Granted Patent
Utility
US 4,764,430 · App. 07/001,304
Crosslinkable compositions containing polyepoxides and polyacid curing agents
Inventors:
William P. Blackburn, Debra L. Singer
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Jan 8, 1987
Inventors
William P. Blackburn
Debra L. Singer
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.