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:
Apr. 06, 2010
Filed:
May. 18, 2004
Mitsuo Usami, Tachikawa, JP;
Mitsuo Usami, Tachikawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
There is a problem related to radio wave interference, e.g. the shade of radio wave of a radio IC tag, when a plurality of radio IC tags are present in a region of electromagnetic wave. When a plurality of antennas each having a large area are present in the vicinity of the radio IC tag, the radio IC tag easily receives the affect of an antenna conductor. In a plurality of radio IC tags present in a radio wave area, width of the antenna conductor of the radio IC tag is set at 1.0 mm or less. Furthermore, in order to realize an antenna conductor having a small width, an IC tag chip of both side electrode structure having electrodes on the front surface and rear surface of a chip is sandwiched between antennas.