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:
Apr. 19, 2022
Filed:
Apr. 16, 2020
Tpr Co., Ltd., Tokyo, JP;
Toshiaki Shimizu, Tokyo, JP;
Shinpei Teshima, Tokyo, JP;
Yasuhiko Okamura, Tokyo, JP;
Yusuke Kawaguchi, Tokyo, JP;
Kazuki Otomo, Tokyo, JP;
Yuta Koguchi, Tokyo, JP;
Katsuhito Suzuki, Tokyo, JP;
Yoshio Bando, Tokyo, JP;
TPR CO., LTD., Tokyo, JP;
Abstract
Applicability to a composite material with high purity and high strength, and a material requiring high conductivity or high thermal conductivity is enhanced. The present invention relates to a multi-walled carbon nanotube having two or more tubes of a graphene sheet where carbon atoms are arranged in a hexagonal honeycomb form, coaxially, wherein a diameter of an outermost wall based on observation of an image by a transmission electron microscope is 3 nm or more and 15 nm or less, and a length based on observation of an image of a scanning electron microscope is 1.0 mm or more, an aggregate of multi-walled carbon nanotubes and a method for preparing the multi-walled carbon nanotube.