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. 27, 2007
Filed:
May. 18, 2004
Fumiaki Kataoka, Chiba, JP;
Eiji Osawa, Chiba, JP;
Takahiro Fujino, Kochi, JP;
Makoto Takahashi, Chiba, JP;
Osamu Idohara, Kanagawa, JP;
Akira Terajima, Kanagawa, JP;
Yoshiaki Inoue, Kanagawa, JP;
Seiji Yokota, Kanagawa, JP;
Kazuhiro Kawasaki, Kanagawa, JP;
Fumiaki Kataoka, Chiba, JP;
Eiji Osawa, Chiba, JP;
Takahiro Fujino, Kochi, JP;
Makoto Takahashi, Chiba, JP;
Osamu Idohara, Kanagawa, JP;
Akira Terajima, Kanagawa, JP;
Yoshiaki Inoue, Kanagawa, JP;
Seiji Yokota, Kanagawa, JP;
Kazuhiro Kawasaki, Kanagawa, JP;
Futaba Corporation, Chiba, JP;
Nanocarbon Research Institute Ltd., Chiga, JP;
Neturen Co., Ltd., Tokyo, JP;
Abstract
Ultradispersed ones of primary particles of nanometer-sized carbon are obtained by applying a wet-type milling method and/or a wet dispersion method to an aggregate structure of the primary particles to overcome van der Waals forces, by which forces the primary particles are held together to form the aggregate structure, whereby the ultradispersed primary particles are obtained in a colloidal dispersion on a large-scale basis at low cost without using any additive. In a method of manufacturing the ultradispersed primary particles, the wet-type milling method is carried out in a ball mill, preferably in combination with a high-energy ultrasonic-wave process carried out in a dispersing medium such as pure water, whereby a colloidal solution or slurry with a low-concentration of the primary particles ultradispersed in the dispersing medium is obtained.