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. 11, 2018
Filed:
Jul. 25, 2012
Yuko Shimizu, Nagoya, JP;
Nobuyuki Tomioka, Nagoya, JP;
Shirou Honda, Nagoya, JP;
Maki Nagano, Nagoya, JP;
Yuji Echigo, Nagoya, JP;
Hiroshi Takezaki, Nagoya, JP;
Junko Kawasaki, Iyo-gun, JP;
Hiroshi Taiko, Iyo-gun, JP;
Yuko Shimizu, Nagoya, JP;
Nobuyuki Tomioka, Nagoya, JP;
Shirou Honda, Nagoya, JP;
Maki Nagano, Nagoya, JP;
Yuji Echigo, Nagoya, JP;
Hiroshi Takezaki, Nagoya, JP;
Junko Kawasaki, Iyo-gun, JP;
Hiroshi Taiko, Iyo-gun, JP;
TORAY INDUSTRIES, INC., Tokyo, JP;
Abstract
A fiber reinforced composite material having high interlaminar toughness and compressive strength under wet heat conditions, as well as an epoxy resin composition for production thereof and a prepreg producible from the epoxy resin composition is described. The prepreg includes at least constituents [A], [B], and [C] as specified below and reinforcement fiber, wherein 90% or more of constituent [C] exists in the depth range accounting for 20% of the prepreg thickness from the prepreg surface: [A] epoxy resin; [B] epoxy resin curing agent; and [C] polymer particles insoluble in epoxy resin.