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:
Sep. 22, 2026
Filed:
May. 23, 2023
Kuraray Co., Ltd., Kurashiki, JP;
Keiichi Ikehata, Kurashiki, JP;
Hideki Kamada, Kurashiki, JP;
Hideharu Iwasaki, Osaka, JP;
Kazuhisa Nakayama, Kurashiki, JP;
KURARAY CO., LTD., Kurashiki, JP;
Abstract
A liquid crystal polyester fiber having good mechanical properties and excellent heat aging resistance is obtained by a heat treatment at a low temperature for a short time. The liquid crystal polyester fiber includes one or more metallic elements from Group 8 to Group 11 elements in the Periodic Table. The total content of the metallic element(s) in the liquid crystal polyester fiber can range from 1 to 1000 ppm by weight. The liquid crystal polyester fiber may contain the metallic element(s) as one or more metallic compounds, each having a melting point of (Mp+30)°C or lower, where Mpdenotes the melting point of the liquid crystal polyester constituting the fiber.