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:
Jul. 11, 2023
Filed:
Jul. 26, 2019
Osaka Soda Co., Ltd., Osaka, JP;
Meijo Nano Carbon Co., Ltd., Nagoya, JP;
Naruhito Iwasa, Osaka, JP;
Daigo Hirayama, Osaka, JP;
Jitsuo Oda, Osaka, JP;
Yasushi Miki, Osaka, JP;
Hisato Kagawa, Osaka, JP;
Takeshi Hashimoto, Nagoya, JP;
Kei Takano, Nagoya, JP;
Osaka Soda Co., Ltd., Osaka, JP;
Meijo Nano Carbon Co., Ltd., Nagoya, JP;
Abstract
Provided is a method for highly efficiently producing highly pure single-walled carbon nanotubes. This method for producing carbon nanotubes by fluidized CVD includes: a step for heating a material (A) to 1200° C. or higher, in which the total mass of AlOand SiOconstitutes at least 90% of the total mass of the material (A) and the mass ratio of AlO/SiOis in the range of 1.0-2.3; and a step for bringing a gas, which is present in the environment in which the material (A) is being heated to 1200° C. or higher, into contact with a feed gas to generate carbon nanotubes.