Granted Patent
Utility
US 5,115,023 · App. 07/609,041
Siloxane organic hybrid polymers
Inventors:
John D. Basil, Chia-Cheng Lin, Robert M. Hunia
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Nov 5, 1990
Inventors
John D. Basil
Chia-Cheng Lin
Robert M. Hunia
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.