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:
May. 20, 2014
Filed:
May. 30, 2012
Takashi Ono, Kanagawa, JP;
Isao Hirano, Kanagawa, JP;
Satoshi Fujimura, Kanagawa, JP;
Kimihisa Yamamoto, Tokyo, JP;
Takane Imaoka, Tokyo, JP;
Takashi Ono, Kanagawa, JP;
Isao Hirano, Kanagawa, JP;
Satoshi Fujimura, Kanagawa, JP;
Kimihisa Yamamoto, Tokyo, JP;
Takane Imaoka, Tokyo, JP;
Tokyo Ohka Kogyo Co., Ltd., Kawasaki-shi, JP;
Tokyo Institute of Technology, Tokyo, JP;
Abstract
A method for preparing carbon nanotubes including attaching a catalyst consisting of a compound in which a transition metal element of Group 8, 9 or 10 is coordinated to a nitrogen-containing dendrimer compound having at least one nitrogen atom, to which a metal element may be coordinated, on a surface of a substrate, and thermally decomposing a carbon compound in the vicinity of the substrate while supplying the carbon compound on the surface of the substrate to which the catalyst is attached. The catalyst for producing the carbon nanotubes is a compound in which a transition metal element of Group 8, 9 or 10 is coordinated to a nitrogen-containing dendrimer compound having at least one nitrogen atom to which a metal element may be coordinated.