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:
Mar. 05, 2019
Filed:
Jan. 30, 2014
Tanaka Kikinzoku Kogyo K.k., Tokyo, JP;
Kyoto University, Kyoto-shi, Kyoto, JP;
Kunihiro Shima, Isehara, JP;
Kenji Goto, Hiratsuka, JP;
Yasushi Masahiro, Tokyo, JP;
Asaka Ueno, Tokyo, JP;
Hiroo Iwata, Kyoto, JP;
Ryusuke Nakai, Kyoto, JP;
Tomonobu Kodama, Kyoto, JP;
TANAKA KIKINZOKU KOGYO K.K., Tokyo, JP;
KYOTO UNIVERSITY, Kyoto, JP;
Abstract
The present invention is an alloy for medical use including an Au—Pt alloy, containing 34 to 36 mass % of Pt with the balance being Au, and having an α-phase single structure in which a ratio of a peak intensity (X) of a Pt (111) plane to a peak intensity (Y) of an Au (111) plane (X/Y) is 0.01 or less in an X-ray diffraction analysis. The alloy can be produced in such a manner that after the Au—Pt alloy ingot is molten and cast, cold working and a heat treatment for homogenization are performed at least two times on the molten and cast alloy. The alloy of the present invention is an artifact-free material that exhibits excellent compatibility with a magnetic field environment such as an MRI and has magnetic susceptibility of ±4 ppm with respect to that of water.