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:
Jul. 03, 2007
Filed:
Aug. 09, 2004
Tadashi Fujieda, Mito, JP;
Kishio Hidaka, Hitachiota, JP;
Shinzou Ikeda, Tokai, JP;
Mitsuo Hayashibara, Hitachinaka, JP;
Noriyuki Taguchi, Yokoham, JP;
Tadashi Fujieda, Mito, JP;
Kishio Hidaka, Hitachiota, JP;
Shinzou Ikeda, Tokai, JP;
Mitsuo Hayashibara, Hitachinaka, JP;
Noriyuki Taguchi, Yokoham, JP;
Hitachi Ltd., , JP;
Abstract
The purpose of the present invention is to provide an easy-to-manufacture electromagnetic wave absorption material usable from submillimeter wave region to millimeter wave region with an excellent radio wave absorbing performance and a variety of usage thereof. The present invention is characterized by an electromagnetic wave absorption material comprised of a dispersions of at least one of the materials: a multi-layer hollow globule of carbon, a schungite carbon, and the schungite ore; mixed into a matter having a high electrical resistivity. The invention is further characterized by an electronic device, an optical transmission module, an optical reception module, a high frequency telecommunication equipment, and a stop-free automated tollgate system, wherein at least a part of their board, electronic element, and circuit wiring are covered with said electromagnetic wave absorption material.