Granted Patent
Utility
US 5,098,939 · App. 07/498,194
Antistatic composition
Inventors:
Kenneth J. Sienkowski, Paritosh M. Chakrabarti
Patented Case
View Patent ↗
Granted: Mar 24, 1992
Filed: Mar 23, 1990
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.