Granted Patent
Utility
US 5,695,876 · App. 08/528,830
Method and composition for applying acidic interleaving material in aqueous media to glass sheets
Inventors:
Helmut Franz, Fred A. Fortunato
Patented Case
View Patent ↗
Granted: Dec 9, 1997
Filed: Sep 15, 1995
Inventors
Helmut Franz
Fred A. Fortunato
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.