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. 26, 2022
Filed:
Jan. 25, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Eugene Oh, Daejeon, KR;
Juhan Kim, Daejeon, KR;
Ji Eun Kim, Daejeon, KR;
Jaehong Lee, Daejeon, KR;
Won Jae Lee, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 32/174 (2017.01);
U.S. Cl.
CPC ...
C01B 32/174 (2017.08); C01B 2202/26 (2013.01); C01P 2004/03 (2013.01);
Abstract
The present invention relates to a method for enhancing tensile strength of a carbon nanotube (CNT) fiber aggregate, comprising dispersing a CNT fiber aggregate with chlorosulfonic acid (CSA), followed by thermal treatment, wherein a particular magnitude of tension is applied upon the thermal treatment, whereby the CNT fiber aggregate is increased in alignment level and tensile strength.