Granted Patent
Utility
US 4,534,951 · App. 06/552,734
Manufacture of high quality graphite electrodes using calcined anthracite coal as raw material
Inventors:
James Kortovich, Eugene Micinski
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Nov 17, 1983
Inventors
James Kortovich
Eugene Micinski
Assignee (at issue)
Union Carbide 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.