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:
May. 07, 2024
Filed:
Apr. 23, 2019
Lg Chem, Ltd., Seoul, KR;
Jae Gil Choi, Daejeon, KR;
Ji Hye Shin, Daejeon, KR;
Joon Hee Cho, Daejeon, KR;
Su Jin Kim, Daejeon, KR;
Ki Hwan Kim, Daejeon, KR;
Il Ha Lee, Daejeon, KR;
Myung Su Jang, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
A method of preparing a carbon fiber including: preparing a precursor fiber for preparing a carbon fiber; and stabilizing the precursor fiber. The stabilization of the precursor fiber includes a first stabilization phase, a second stabilization phase, a third stabilization phase, and a fourth stabilization phase, which are set at four different temperatures between a temperature at which heat starts to be generated from the stabilization reaction of the precursor fiber and a temperature at which the generation of heat is maximized. Ozone gas is input while at least one phase of the third stabilization phase and the fourth stabilization phase is carried out.