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:
Jan. 09, 2007
Filed:
Sep. 28, 2001
Toshio Saito, Inzai, JP;
Kenichi Harakawa, Inzai, JP;
Yoshitaka Wakinaka, Inzai, JP;
Takeshi Kunishima, Chuo-ku, JP;
Kenichi Yoshimura, Chuo-ku, JP;
Yoshifumi Fujii, Chuo-ku, JP;
Shin-ichiro Andoh, Chuo-ku, JP;
Takeo Iwata, Machida, JP;
Masakazu Sato, Machida, JP;
Toshio Saito, Inzai, JP;
Kenichi Harakawa, Inzai, JP;
Yoshitaka Wakinaka, Inzai, JP;
Takeshi Kunishima, Chuo-ku, JP;
Kenichi Yoshimura, Chuo-ku, JP;
Yoshifumi Fujii, Chuo-ku, JP;
Shin-ichiro Andoh, Chuo-ku, JP;
Takeo Iwata, Machida, JP;
Masakazu Sato, Machida, JP;
Takenaka Corporation, Osaka, JP;
Takenaka Road Construction Co., Ltd., Tokyo, JP;
Takenaka Civil Engineering & Construction Co., Ltd., Tokyo, JP;
Abstract
An electromagnetic absorber formed of conductive fiber or the like, such as carbon fiber having an overall length corresponding to the wavelength of electromagnetic waves to be absorbed, is mixed into a base material to form an electromagnetic wave-absorbing pavement material. The electromagnetic wave-absorbing pavement material is used to form a pavement having an electromagnetic wave absorbing course. Further, an electromagnetic wave reflecting course is disposed under the electromagnetic wave absorbing course, and the electric length of the electromagnetic wave reflecting course is set to a predetermined value in relation to the dielectric constant so that electromagnetic waves reflecting off the surface of the electromagnetic wave absorbing course and electromagnetic waves reflecting off the electromagnetic wave reflecting course have opposite phases and thereby cancel each other out, whereby the electromagnetic waves are absorbed well.