Granted Patent
Utility
US 5,178,676 · App. 07/607,189
Surfactant treated clays useful as anti-tack agents for uncured rubber compounds
Inventors:
Walter O. Lackey, Carl J. Marshall, Jr., James E. Sikes, Gary M. Freeman
Patented Case
View Patent ↗
Granted: Jan 12, 1993
Filed: Oct 31, 1990
Inventors
Walter O. Lackey
Carl J. Marshall, Jr.
James E. Sikes
Gary M. Freeman
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.