US 7,524,479 B2
	Method for producing vapor grown carbon fiber
Kazuo Muramaki, Kanagawa (Japan); Yoshihisa Sakamoto, Kanagawa (Japan); Ryuji Yamamoto, Kanagawa (Japan); and Toshio Morita, Kanagawa (Japan)
Assigned to Showa Denko K.K., Tokyo (Japan)
Appl. No. 10/475,777 PCT Filed Jun. 26, 2002, PCT No. PCT/JP02/06402 § 371(c)(1), (2), (4) Date Oct. 23, 2003, PCT Pub. No. WO03/002789, PCT Pub. Date Jan. 09, 2003.
Claims priority of provisional application 60/303793, filed on Jul. 10, 2001.
Claims priority of provisional application 60/362447, filed on Mar. 08, 2002.
Claims priority of application No. 2001-195801 (JP), filed on Jun. 28, 2001; and application No. 2002-034883 (JP), filed on Feb. 13, 2002.
Prior Publication US 2004/0136895 A1, Jul. 15, 2004
Int. Cl. D01F 9/12 (2006.01)

U.S. Cl. 423—447.8  [423/447.4]

19 Claims

1. A method for producing vapor grown carbon fiber using an organo-transition metallic compound as a catalyst and an organic compound as a carbon source, comprising heating a carrier gas to a temperature of 700 to 1600° C., mixing the heated carrier gas with a raw material gas containing the organic compound as a carbon source or with a raw material gas containing the organo-transition metallic compound and the organic compound, and then introducing the resultant gas mixture containing the heated carrier gas into a carbon fiber production zone.