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:
Nov. 25, 2008
Filed:
Jan. 18, 2006
Hiroyuki Yano, Kyoto, JP;
Junji Sugiyama, Kyoto, JP;
Masaya Nogi, Kyoto, JP;
Shin-ichiro Iwamoto, Kyoto, JP;
Keishin Handa, Kanagawa, JP;
Akira Nagai, Ibaraki, JP;
Takao Miwa, Ibaraki, JP;
Yoshitaka Takezawa, Ibaraki, JP;
Toshiyuki Miyadera, Saitama, JP;
Takashi Kurihara, Tokyo, JP;
Tohru Matsuura, Tokyo, JP;
Nobutatsu Koshoubu, Tokyo, JP;
Tohru Maruno, Tokyo, JP;
Hiroyuki Yano, Kyoto, JP;
Junji Sugiyama, Kyoto, JP;
Masaya Nogi, Kyoto, JP;
Shin-ichiro Iwamoto, Kyoto, JP;
Keishin Handa, Kanagawa, JP;
Akira Nagai, Ibaraki, JP;
Takao Miwa, Ibaraki, JP;
Yoshitaka Takezawa, Ibaraki, JP;
Toshiyuki Miyadera, Saitama, JP;
Takashi Kurihara, Tokyo, JP;
Tohru Matsuura, Tokyo, JP;
Nobutatsu Koshoubu, Tokyo, JP;
Tohru Maruno, Tokyo, JP;
Kyoto University, Kyoto-shi, JP;
Rohm Co., Ltd., Kyoto-shi, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
There is provided a fiber-reinforced composite material containing fibers having an average fiber diameter of 4 to 200 nm and a matrix material, the composite material having a visible light transmittance of 60% or more at a wavelength of 400 to 700 nm, which is a conversion value based on a thickness of 50 μm. A fiber-reinforced composite material composed of a matrix material and a fiber aggregate impregnated therewith is provided, in which when a segment length of a bright region corresponding to a pore region of the fiber aggregate is represented by L, which is obtained by statistical analysis of a unidirectional run-length image formed from a binary image obtained by binarization of a scanning electron microscopic image of the fiber aggregate, the total length of segments that satisfy L≧4.5 μm is 30% or less of the total analyzed length. A transparent multilayered sheet, a circuit board, and an optical waveguide are provided which use a transparent substrate formed from this fiber-reinforced composite material.