Granted Patent
Utility
US 5,672,641 · App. 08/376,998
Secondary coating compositions for glass fibers, glass fibers coated with the same and composites reinforced therewith
Inventors:
Kenneth D. Beer, Barbara J. Anderson, Richard A. Davis
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Jan 23, 1995
Inventors
Kenneth D. Beer
Barbara J. Anderson
Richard A. Davis
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.