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:
Mar. 31, 2015
Filed:
Mar. 02, 2011
Daisuke Miyamoto, Minato-ku, JP;
Eiji Kambara, Minato-ku, JP;
Daisuke Miyamoto, Minato-ku, JP;
Eiji Kambara, Minato-ku, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A method of producing carbon fibers, in which the producing method comprises allowing a supported type catalyst and a carbon atom-containing compound to come in contact with each other in a heating zone, wherein the supported type catalyst is prepared by a method comprising impregnation of a powdery carrier with colloid containing catalyst to support particles of the catalyst on the powdery carrier having a specifically developed crystal plane such as a powdery carrier being 4 or more in the ratio (I/I) of the intensity Iof the strongest peak to the intensity Iof the second strongest peak observed in X-ray diffraction, or a powdery carrier having the ratio (I/I) of the intensity Iof the strongest peak to the intensity Iof the second strongest peak observed in X-ray diffraction of 1.5 times or more the ratio (I/I) of the intensity Iof the strongest peak to the intensity Iof the second strongest peak described in JCPDS. A composite material is prepared by blending the carbon fibers prepared by the method with, for example, a resin.