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:
Aug. 20, 2013
Filed:
Jun. 22, 2010
Takeshi Tanaka, Ibaraki, JP;
Hiromichi Kataura, Ibaraki, JP;
Huaping Liu, Ibaraki, JP;
Abstract
To provide a method for separating metallic CNT and semiconducting CNT by treating a CNT-containing gel or a CNT dispersion as combined with a gel, according to a physical separation means to thereby make semiconducting CNT exist in gel and metallic CNT exist in solution, in which the semiconducting CNT adsorbed by gel are collected in a more simplified manner not dissolving the gel. A CNT-containing gel or a CNT dispersion combined with a gel is treated according to a physical separation means of a centrifugal method, a freezing squeezing method, a diffusion method or a permeation method, to thereby make semiconducting CNT exist in gel and metallic CNT exist in solution so that the metallic CNT and the semiconducting CNT are separated from each other, and further, a suitable eluent is made to react on the gel that adsorbs semiconducting CNT to elute the semiconducting CNT from the gel.