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. 14, 2010
Filed:
Apr. 27, 2005
Tetsuya Kuwabara, Osaka, JP;
Hideaki Toshioka, Osaka, JP;
Hideki Kashihara, Osaka, JP;
Keiji Koyama, Osaka, JP;
Takashi Sakai, Hyogo, JP;
Tetsuya Kuwabara, Osaka, JP;
Hideaki Toshioka, Osaka, JP;
Hideki Kashihara, Osaka, JP;
Keiji Koyama, Osaka, JP;
Takashi Sakai, Hyogo, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A chain metal powder, which is free from branches and has a small distribution of the chain length, can be produced by a process of reducing metal ions contained in an aqueous solution, while applying a magnetic field to the solution containing ferromagnetic ions, in the presence of a polymer compound comprising repeating units of the formula (1): and repeating unit of the formula (2): or repeating unit of the formula (4); or a process which comprises the steps of reducing metal ions contained in an aqueous solution, while applying a magnetic filed to the solution, in the presence of both a reducing agent capable of generating a gas during the reduction of metal ions and a foamable water soluble compound, through the generation of a gas, a bubble layer on the surface of the aqueous solution to form a chain metal powder, separating the bubble layer formed on the surface of the aqueous solution from the solution, and collecting the chain metal powder contained in the bubble layer.