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. 09, 2003
Filed:
Nov. 03, 2000
Applicant:
Inventors:
Tadashi Koyama, Kyoto, JP;
Yoshiro Arami, Shiga, JP;
Masato Kikukawa, Shiga, JP;
Osamu Iwatsu, Kobe, JP;
Yasuhiko Hashimoto, Himeji, JP;
Assignee:
Fukuda Metal Foil & Powder Co., Ltd., Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
B22F 9/04 ;
U.S. Cl.
CPC ...
B22F 9/04 ;
Abstract
The present invention relates to a method of preparing porous metal powder, a starting metal being oxidized and then reduced followed by that the obtained block metal body is milled. According to the present invention, the starting metal is oxidized in the presence of chlorine and/or chloride. The present block metal body after reduction has prismatic particles complicatedly entangled like a root so that the pore of the metal powder is open.