Granted Patent
Utility
US 5,167,868 · App. 07/658,700
Conductive expandable carbonaceous paste material
Inventors:
Harvey E. Willey, William R. Clark, Harold L. King
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Feb 21, 1991
Inventors
Harvey E. Willey
William R. Clark
Harold L. King
Assignee (at issue)
UCAR Carbon Technology 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.