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:
Dec. 23, 2025
Filed:
Jun. 23, 2020
The University of Tokyo, Tokyo, JP;
Akio Morimoto, Kobe, JP;
Naoyuki Furusho, Nagano, JP;
Ichiro Sakata, Tokyo, JP;
Bunshi Fugetsu, Tokyo, JP;
Takayuki Ueki, Tokyo, JP;
Akio Morimoto, Kobe, JP;
Naoyuki Furusho, Kitaazumi-gun, JP;
The University of Tokyo, Tokyo, JP;
Other;
Abstract
A carbon fiber reinforced composite material includes carbon fiber and a thermosetting resin composition. The thermosetting resin composition is a cured product of a liquid composition that contains unsaturated polyester, a curing agent, a polymerization initiator, and a nanocarbon/nanocellulose complex containing nanocarbon modified by functional a group and nanocellulose. The nanocarbon/nanocellulose complex is dispersed in the thermosetting resin composition. The thermosetting resin composition contains 0.05 to 15% by weight of the nanocarbon/nanocellulose complex. A maximum point stress of the carbon fiber reinforced composite material in a tensile test according to JIS K 7164 is 410 N/mmor more. A maximum point stress of the carbon fiber reinforced composite material in a three-point bending test according to JIS K 7171 is 310 N/mmor more.