Granted Patent
Utility
US 5,117,439 · App. 07/677,109
Method for operating an electrode graphitization furnace
Inventors:
Frank J. Dagata, Kenneth G. Politowicz
Patented Case
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Granted: May 26, 1992
Filed: Mar 29, 1991
Inventors
Frank J. Dagata
Kenneth G. Politowicz
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.