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:
Sep. 27, 2022
Filed:
Sep. 24, 2020
Tanaka Kikinzoku Kogyo K.k., Tokyo, JP;
Tokushima University, Tokushima, JP;
Michimasa Okubo, Isehara, JP;
Kenji Goto, Isehara, JP;
Kunihiro Tanaka, Isehara, JP;
Kojiro Shiraishi, Isehara, JP;
Kunihiro Shima, Isehara, JP;
Yuya Kato, Isehara, JP;
Kenichi Hamada, Tokushima, JP;
Eiichi Honda, Tokushima, JP;
Emi Takegawa, Tokushima, JP;
TANAKA KIKINZOKU KOGYO K.K., Tokyo, JP;
TOKUSHIMA UNIVERSITY, Tokushima, JP;
Abstract
The present invention relates to a medical Au—Pt—Pd alloy including Au, Pt, Pd, and inevitable impurities. The alloy has an alloy composition inside a polygon (A1-A2-A3-A4-A5-A6) surrounded by straight lines connected at point A1 (Au: 37.9 atom %, Pt: 0.1 atom %, and Pd: 62 atom %), point A2 (Au: 79.9 atom %, Pt: 0.1 atom %, and Pd: 20 atom %), point A3 (Au: 79.9 atom %, Pt: 20 atom %, and Pd: 0.1 atom %), point A4 (Au: 69.9 atom %, Pt: 30 atom %, and Pd: 0.1 atom %), point A5 (Au: 49 atom %, Pt: 30 atom %, and Pd: 21 atom %), and point A6 (Au: 39 atom %, Pt: 40 atom %, and Pd: 21 atom %) in a Au—Pt—Pd ternary state diagram. The metal structure of the alloy is optimized, and the metal structure is close to a single-phase structure, and has little precipitation of a Au-rich phase and a Pt-rich phase different in composition from a mother phase.