Patents Examined by Carl E. Arbes
  • Method of making graphite electrode nipple
    Patent number: 4998709
    Abstract: The present invention resides in improved graphite nipples which are suitable for connecting graphite electrodes. The graphite nipples are prepared by adding mesophase pitch-based carbon fibers into a typical nipple extrusion blend.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: March 12, 1991
    Assignee: Conoco Inc.
    Inventors: Robert R. Griffin, Keith M. Roussel, Ta-Wei Fu