Granted Patent
Utility
US 4,834,857 · App. 07/176,563
Neutral sputtered films of metal alloy oxides
Inventor:
F. Howard Gillery
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Apr 1, 1988
Inventor
F. Howard Gillery
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.