Granted Patent
Utility
US 5,110,336 · App. 07/635,018
Method of using amorphous precipitated silica parting material for shaping glass sheet doublets
Inventors:
Randy R. Kadunce, Paul Bush, Pamela L. Martino
Patented Case
View Patent ↗
Granted: May 5, 1992
Filed: Dec 28, 1990
Inventors
Randy R. Kadunce
Paul Bush
Pamela L. Martino
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.