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. 20, 2009
Filed:
Aug. 03, 2006
Hiroshi Kurihara, Tokyo, JP;
Toshifumi Saito, Tokyo, JP;
Miki Kasabo, Shiga, JP;
Toru Sugahara, Shiga, JP;
Takashi Tanoue, Shiga, JP;
Kazuya Matsumura, Osaka, JP;
Hiroshi Kurihara, Tokyo, JP;
Toshifumi Saito, Tokyo, JP;
Miki Kasabo, Shiga, JP;
Toru Sugahara, Shiga, JP;
Takashi Tanoue, Shiga, JP;
Kazuya Matsumura, Osaka, JP;
TDK Corporation, Tokyo, JP;
TORAY Industries, Inc., Tokyo, JP;
Abstract
An electromagnetic wave absorber has a configuration in which at least three hollow tetrahedrons, each having one open face, are connected to one another so that each surface opposite to a respective open face of the hollow tetrahedrons defines a respective side face of a hollow pyramid. Preferably, the electromagnetic wave absorber is made of sheet electromagnetic wave absorption members, which have a corrugated board structure in which at least one sheet includes an electrically conductive material. The electromagnetic wave absorber is low-cost, has reduced transport volume, excellent electromagnetic wave absorption characteristics from low frequency to high frequency with a shorter absorber length, has no or small difference in characteristics due to polarization plane, is lightweight and high in structural strength, and easy to manufacture and install.