Granted Patent
Utility
US 4,783,502 · App. 07/128,353
Stable nonaqueous polyurethane microparticle dispersion
Inventors:
Dennis L. Faler, Gregory J. McCollum, James B. O'Dwyer, Marvis E. Hartman
Patented Case
View Patent ↗
Granted: Nov 8, 1988
Filed: Dec 3, 1987
Inventors
Dennis L. Faler
Gregory J. McCollum
James B. O'Dwyer
Marvis E. Hartman
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.