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:
Oct. 14, 2025
Filed:
Mar. 12, 2019
Applicant:
Teijin Limited, Osaka, JP;
Inventors:
Mizuki Sasaki, Osaka, JP;
Toru Kaneko, Osaka, JP;
Assignee:
TEIJIN LIMITED, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 5/04 (2006.01); C08J 5/24 (2006.01); C08K 5/18 (2006.01); C08K 5/21 (2006.01);
U.S. Cl.
CPC ...
C08J 5/042 (2013.01); C08J 5/243 (2021.05); C08J 5/249 (2021.05); C08K 5/18 (2013.01); C08J 2363/00 (2013.01); C08K 5/21 (2013.01);
Abstract
The present invention provides a prepreg including a fiber-reinforced substrate composed of a carbon fiber and an epoxy resin composition with which the fiber-reinforced substrate is partially or wholly impregnated, the prepreg being characterized in that the epoxy resin composition includes an epoxy resin, dicyandiamide, and an aromatic amine having a structure of Chemical Formula (1) in which at least one substituent other than a hydrogen atom is included in an ortho position with respect to an amino group.