Granted Patent
Utility
US 6,615,987 · App. 09/566,130
Method of treating an aqueous suspension of kaolin
Inventors:
David Andrew Greenhill, Anthony Allan May, Christopher R. L. Golley, Ronald Windell Andrews
Patented Case
View Patent ↗
Granted: Sep 9, 2003
Filed: May 5, 2000
Inventors
David Andrew Greenhill
Anthony Allan May
Christopher R. L. Golley
Ronald Windell Andrews
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.