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:
Jan. 12, 2016
Filed:
May. 15, 2012
Takashi Tanaka, Tokyo, JP;
Motohisa Sakai, Yokohama, JP;
Yasuhiko Nakano, Yokohama, JP;
Kan Suganomata, Fujisawa, JP;
Motoaki Esaki, Yokosuka, JP;
Kayo Nakano, Yokohama, JP;
Takashi Tanaka, Tokyo, JP;
Motohisa Sakai, Yokohama, JP;
Yasuhiko Nakano, Yokohama, JP;
Kan Suganomata, Fujisawa, JP;
Motoaki Esaki, Yokosuka, JP;
Kayo Nakano, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
One embodiment provides a tungsten wire containing 1 to 10% by mass of rhenium, the wire having a point indicating a 2% elongation within a quadrangle formed by joining points with straight lines, where the values of x and y are point (20, 75), point (20, 87), point (90, 75), and point (90, 58), in this order; wherein the wire diameter of the tungsten wire is represented by x μm, and the elongation of the tungsten wire is 2% after electrically heating with an electrical current which is a ratio of y % to the fusion current (FC) at the wire diameter x μm, and wherein a semi-logarithmic system of coordinates is expressed by a horizontal axis using a logarithmic scale of the wire diameter x and a vertical axis using a normal scale of ratio y to the fusion current.