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:
Jul. 02, 1985
Filed:
Mar. 05, 1984
Akinori Yoshizawa, Nakano, Nakano-ku, Tokyo, JP;
Yasuo Nakane, Tokyo, JP;
Kenji Hagimori, Takasaki, JP;
Koya Ohgai, Funabashi, JP;
Norisada Arisawa, Fujioka, JP;
Tadashi Takahashi, Fujioka, JP;
Hideaki Maekawara, Annaka, JP;
Hiroyuki Imaizumi, Fujioka, JP;
Hideyuki Tsuchida, Tokyo, JP;
Eiichirou Mieno, Annaka, JP;
Kenji Sugino, Annaka, JP;
Toho Zinc Co., Ltd., Tokyo, JP;
Other;
Abstract
An improved process for producing superfines of metal is disclosed, which comprises reacting a metal halide containing gas with a reducing gas by causing to flow both the stream of a metal halide containing gas and the stream of a reducing gas concurrently but at different velocities so as to form an interfacial instability region in the reaction zone, and nuclei are formed in said instability region whereas said reaction zone is quenched (cooled) to inhibit the excessive growth of said nuclei. Application of a magnetic field to the reaction zone can enhance the degree of fineness and magnetic properties of the superfines thus produced.