Granted Patent
Utility
US 5,229,036 · App. 07/772,502
Antistatic composition
Inventors:
Kenneth J. Sienkowski, Paritosh M. Chakrabarti
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Oct 7, 1991
Inventors
Kenneth J. Sienkowski
Paritosh M. Chakrabarti
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.