Granted Patent
Utility
US 5,646,207 · App. 08/388,959
Aqueous sizing compositions for glass fibers providing improved whiteness in glass fiber reinforced plastics
Inventor:
Philip L. Schell
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Feb 15, 1995
Inventor
Philip L. Schell
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.