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:
Jul. 02, 2024
Filed:
Feb. 18, 2020
Applicants:
Du Pont-toray Co., Ltd., Tokyo, JP;
Toyota Tsusho Matex Corporation, Osaka, JP;
Inventors:
Assignees:
DU PONT-TORAY CO., LTD., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 13/26 (2006.01); H01B 3/30 (2006.01); H01B 3/52 (2006.01);
U.S. Cl.
CPC ...
D21H 13/26 (2013.01); H01B 3/306 (2013.01); H01B 3/52 (2013.01);
Abstract
A method is provided for manufacturing a polyimide fiber paper intermediate structure, which includes: a short fiber preparing step for preparing shaved short fibers of a non-thermoplastic polyimide; and an intermediate structure forming step for forming a polyimide fiber paper intermediate structure in which the short fibers are temporarily bonded using a water-soluble and/or water-insoluble thermoplastic polymer having a melting point lower than a glass transition point of a polyimide.