Granted Patent
Utility
US 5,705,278 · App. 07/768,791
Heat processable metallic vacuum coatings
Inventors:
F. Howard Gillery, Thomas J. Waynar
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Sep 30, 1991
Inventors
F. Howard Gillery
Thomas J. Waynar
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.