Granted Patent
Utility
US 5,344,712 · App. 07/546,484
Abrasion resistant siloxane coatings containing ceria
Inventors:
John D. Basil, Chia-Cheng Lin
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Jun 29, 1990
Inventors
John D. Basil
Chia-Cheng Lin
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.