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:
Dec. 07, 2010
Filed:
Dec. 08, 2005
Daigou Mizoguchi, Hitachinaka, JP;
Yoshiaki Takata, Naka-gun, JP;
Jun-etsu Satoh, Akita, JP;
Hiroki Hirata, Saitama, JP;
Masato Murouchi, Otawara, JP;
Daigou Mizoguchi, Hitachinaka, JP;
Yoshiaki Takata, Naka-gun, JP;
Jun-etsu Satoh, Akita, JP;
Hiroki Hirata, Saitama, JP;
Masato Murouchi, Otawara, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Dai Nippon Toryo Co., Ltd., Osaka, JP;
Abstract
A process for producing metallic fine particles is provided by, the reduction of the metallic ions performed in two steps using two types of reducing agents which significantly differ in reducing ability thereof, in which a reducing agent in which the reduction ability is strong is used in the first reduction step, and a reducing agent in which the reduction ability is weak is used in the second reduction step, and the nano-sized metallic fine particles are produced. An aqueous metallic salt solution containing a surfactant is used and a two-step reduction is performed in the same vessel, in which as the reducing agent of the first reduction process, at least one selected from the group consisting of boron hydride, dimethylamine borane, hydrazine, and ascorbic acid is used, and as the reducing agent of the second reduction process, specific alkylamine or alkanolamine is used.