The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2016
Filed:
Dec. 08, 2009
Seiji Nakabayashi, Toyama, JP;
Masahiro Katoh, Toyama, JP;
Yoshiharu Yamamoto, Toyama, JP;
Toshihiko Yoshida, Toyama, JP;
Norihiko Hasegawa, Toyama, JP;
Seiji Nakabayashi, Toyama, JP;
Masahiro Katoh, Toyama, JP;
Yoshiharu Yamamoto, Toyama, JP;
Toshihiko Yoshida, Toyama, JP;
Norihiko Hasegawa, Toyama, JP;
A.L.M.T. Corp., Tokyo, JP;
Abstract
Provided is a tungsten electrode material that can improve the life of an electrode than conventional by the use of a material in place of thorium oxide. The tungsten electrode material includes a tungsten base alloy and oxide particles dispersed in the tungsten base alloy, wherein the oxide particle is an oxide solid solution in which a Zr oxide and/or a Hf oxide and an oxide of at least one or more kinds of rare earth elements selected from Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu are solid-dissolved.