Granted Patent
Utility
US 5,328,880 · App. 08/139,297
Fluidity of slurries of kaolin clay using tetraalkylammonium compounds
Inventors:
Jordan Keith Lampert, Richard A. Slepetys, Thomas K. Dombrowski
Patented Case
View Patent ↗
Granted: Jul 12, 1994
Filed: Oct 19, 1993
Inventors
Jordan Keith Lampert
Richard A. Slepetys
Thomas K. Dombrowski
Assignee (at issue)
Engelhard Corporation
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.