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. 05, 2009
Filed:
Nov. 10, 2003
Kotaro Yano, Kanagawa, JP;
Masaharu Toki, Tokyo, JP;
Hitoshi Inoue, Kanagawa, JP;
Tomoaki Yoshida, Kanagawa, JP;
Eiji Kanbara, Kanagawa, JP;
Kotaro Yano, Kanagawa, JP;
Masaharu Toki, Tokyo, JP;
Hitoshi Inoue, Kanagawa, JP;
Tomoaki Yoshida, Kanagawa, JP;
Eiji Kanbara, Kanagawa, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A vapor grown carbon fiber, each fiber filament of the carbonfiber having a branching degree of at least 0.15 occurrences/μm and a bulk density of 0.025 g/cmor less and a producing method of the carbon fiber by spraying a raw material solution containing a carbon source and a transition metallic compound into a reaction zone and subjecting the raw material solution to thermal decomposition, which is characterized in (1) spraying the raw material solution at a spray angle of 3° to 30° and (2) feeding a carrier gas through at least one site other than an inlet through which the raw material solution is sprayed, and a composite material comprising the carbon fiber.