Granted Patent
Utility
US 5,334,639 · App. 08/015,071
Starch oil sizing composition and glass fibers treated therewith
Inventor:
William B. Rice
Patented Case
View Patent ↗
Granted: Aug 2, 1994
Filed: Feb 8, 1993
Inventor
William B. Rice
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.