Granted Patent
Utility
US 6,495,251 · App. 09/058,440
Silicon oxynitride protective coatings
Inventors:
Mehran Arbab, Gary J. Marietti, Paul A. Medwick, Larry A. Miller
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Apr 9, 1998
Inventors
Mehran Arbab
Gary J. Marietti
Paul A. Medwick
Larry A. Miller
Assignee (at issue)
PPG Industries Ohio, 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.