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. 11, 2014
Filed:
Jul. 08, 2008
Hiroshi Igarashi, Kai, JP;
Takayuki Matsumura, Kai, JP;
Shinichi Miyake, Kai, JP;
Taiyo Nippon Sanso Corporation, Tokyo, JP;
Abstract
A method of producing ultra-fine metal particles of the present invention includes: blowing metal powders of raw materials into reducing flame formed by a burnerin a furnace, wherein the metal powders are melted in the flame and allowed to be in an evaporated state, to thereby obtain the spherical ultra-fine metal particles. In the present invention, the atmosphere in the furnaceis preferably prepared such that the CO/COratio is within a range from 0.15 to 1.2. Also, a spiral flow-forming gas is preferably blown into the furnace, and the oxygen ratio of the burneris preferably within a range from 0.4 to 0.8. As raw materials, a metal oxide and/or a metal hydroxide which contain the same metal as the metal powders may be used together with the metal powders.