Granted Patent
Utility
US 5,248,562 · App. 07/815,600
Polyvinyl chloride plastisol composition suitable as a sealant
Inventors:
Anthony C. Palermo, Karl F. Schimmel, Michael M. Chau
Patented Case
View Patent ↗
Granted: Sep 28, 1993
Filed: Dec 27, 1991
Inventors
Anthony C. Palermo
Karl F. Schimmel
Michael M. Chau
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.