Armstrong, Westerman, Hattori, McLeland & Naughton
Graphite electrode having joints
 In order to prevent the rupturing of a graphite electrode comprising electrode sections joined with one another by a socket and a nipple, electrical insulating material is applied on the joined surfaces to decrease the current across the nipple. 
Showa Denko Kabushikikaisha
H Y
H05B Y02P
inventional additional
Masao Osamu Takayuki Yoshishige Hiroyuki
Todoriki Kanazawa Fukai Sekiguchi Yamashita