Granted Patent
Utility
US 5,178,966 · App. 07/273,442
Composite with sputtered films of bismuth/tin oxide
Inventor:
Frank H. Gillery
Patented Case
View Patent ↗
Granted: Jan 12, 1993
Filed: Nov 18, 1988
Inventor
Frank H. 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.