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. 04, 2010
Hidekazu Nishino, Nagoya, JP;
Hajime Kato, Nagoya, JP;
Naoyo Okamoto, Nagoya, JP;
Shuko Ikeuchi, Nagoya, JP;
Kenichi Sato, Nagoya, JP;
Shiho Tanaka, Nagoya, JP;
Kazuyoshi Higuchi, Nagoya, JP;
Hidekazu Nishino, Nagoya, JP;
Hajime Kato, Nagoya, JP;
Naoyo Okamoto, Nagoya, JP;
Shuko Ikeuchi, Nagoya, JP;
Kenichi Sato, Nagoya, JP;
Shiho Tanaka, Nagoya, JP;
Kazuyoshi Higuchi, Nagoya, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
Disclosed is a composition containing carbon nanotubes which meets all of the following conditions (1) to (4). (1) When observed via transmission electron microscopy, at least 50 out of every 100 carbon nanotubes are double-walled carbon nanotubes. (2) The carbon nanotubes have an average outer diameter in the range of 1.0 to 3.0 nm. (3) During thermogravimetric analysis under atmosphere at a temperature increase rate of 10° C./minute, a high temperature combustion peak is at 700 to 850° C., and the relationship between low temperature weight loss (TG(L)) and high temperature weight loss (TG(H)) is TG(H)/(TG(L)+TG(H))≧0.75. (4) The composition containing carbon nanotubes has a volume resistance value between 1.0×10Ω·cm and 1.0×10Ω·cm, inclusive. The disclosed composition containing carbon nanotubes primarily has double-walled carbon nanotubes with high electrical conductivity and high heat resistance.