Granted Patent
Utility
US 5,840,795 · App. 08/841,367
Treated clay product, methods of making and using and products therefrom
Inventors:
Gary M. Freeman, Carl J. Marshall, Jr., Walter O. Lackey, Thomas J. Lynch
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Apr 30, 1997
Inventors
Gary M. Freeman
Carl J. Marshall, Jr.
Walter O. Lackey
Thomas J. Lynch
Assignee (at issue)
J.M. Huber 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.