Granted Patent
Utility
US 4,739,019 · App. 06/938,923
Curable epoxy based compositions having reduced shrinkage during cure
Inventors:
Raymond F. Schappert, Robert M. Piccirilli
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Dec 8, 1986
Inventors
Raymond F. Schappert
Robert M. Piccirilli
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.