Granted Patent
Utility
US 6,440,563 · App. 09/837,841
Pin for connecting carbon electrodes and process therefor
Inventors:
Richard L. Shao, James Kortovich, Irwin C. Lewis, Richard T. Lewis
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Apr 18, 2001
Inventors
Richard L. Shao
James Kortovich
Irwin C. Lewis
Richard T. Lewis
Assignee (at issue)
UCAR Carbon Company Inc.
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.