Granted Patent
Utility
US 6,149,723 · App. 09/359,532
Engineered kaolin pigment composition for paper coating
Inventors:
Robert J. Pruett, Anthony Lyons, David Cummings, Steven M. Fortier, William L. Garforth, Jun Yuan, Daniel J. Panfil
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Jul 22, 1999
Inventors
Robert J. Pruett
Anthony Lyons
David Cummings
Steven M. Fortier
William L. Garforth
Jun Yuan
Daniel J. Panfil
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.