Granted Patent
Utility
US 6,468,343 · App. 09/717,802
Engineered kaolin pigment composition for paper coating
Inventors:
Robert J. Pruett, David Cummings, Anthony Lyons, Steven M. Fortier, William L. Garforth, Daniel J. Panfil, Jun Yuan
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Nov 21, 2000
Inventors
Robert J. Pruett
David Cummings
Anthony Lyons
Steven M. Fortier
William L. Garforth
Daniel J. Panfil
Jun Yuan
Assignee (at issue)
Imerys Pigments, 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.