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. 01, 2005
Filed:
Oct. 29, 1999
Hisaji Matsui, Nara, JP;
Ryoichi Nishida, Ikoma, JP;
Hitoshi Nishino, Kyoto, JP;
Chiharu Yamaguchi, Akashi, JP;
Haruyuki Nakaoka, Kishiwada, JP;
Kazuhiro Takezaki, Yamatokoriyama, JP;
Katsuhiro Sasaki, Osaka, JP;
Hisaji Matsui, Nara, JP;
Ryoichi Nishida, Ikoma, JP;
Hitoshi Nishino, Kyoto, JP;
Chiharu Yamaguchi, Akashi, JP;
Haruyuki Nakaoka, Kishiwada, JP;
Kazuhiro Takezaki, Yamatokoriyama, JP;
Katsuhiro Sasaki, Osaka, JP;
Osaka Gas Company Limited, Osaka, JP;
Abstract
Straight, nano-scale-order amorphous carbon tubes having a long-term stable ability for storing various kinds of gases and being stable in shape, and a novel process for producing said carbon tubes with high purity, high yield and high mass-productivity are provided. The amorphous nano-scale carbon tubes are prepared by subjecting a heat-decomposable resin having a decomposition temperature of 200 to 900° C. to an excitation treatment in the presence of a metal powder and/or a metal salt, or by subjecting a carbon material containing —C≡C— and/or ═C═ to a heat-treatment at 3000° C. or lower.