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:
Jun. 13, 2017
Filed:
Feb. 02, 2012
Kenji Koga, Tsukuba, JP;
Makoto Hirasawa, Tsukuba, JP;
Hiroaki Sakurai, Osaka, JP;
Naoto Koshizaki, Tsukuba, JP;
Kenji Koga, Tsukuba, JP;
Makoto Hirasawa, Tsukuba, JP;
Hiroaki Sakurai, Osaka, JP;
Naoto Koshizaki, Tsukuba, JP;
Abstract
A method of producing a composite nanoparticle (M-AO), having: generating, in an inert gas, an alloy (A-M) nanoparticle, which contains 0.1 at. % to 30 at. % of a noble metal (M), with the balance being a base metal (A) and inevitable impurities, and which has a particle size of 1 nm to 100 nm, to heat the alloy (A-M) nanoparticle and to bring the alloy (A-M) nanoparticle into contact with a supplied oxidizing gas during transportation of the alloy (A-M) nanoparticle with the inert gas, to oxidize the base metal component (A) in the floating alloy (A-M) nanoparticle, and to phase separate into the thus-oxidized base metal component (AO) and the noble metal component (M), to thereby obtain a composite nanoparticle (M-AO) having one noble metal particle (M) combined to the surface of a particulate base metal oxide (AO).