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:
Aug. 19, 2014
Filed:
Feb. 22, 2007
Takayuki Kikuchi, Yokohama, JP;
Ken Sotobayashi, Yokohama, JP;
Masayuki Mori, Yokohama, JP;
Toyo Seikan Kaisha, Ltd., Tokyo, JP;
Abstract
The present invention provides an RFID tag substrate in which communication characteristics of an RFID tag do not vary by an influence of contents in a container, the communication characteristics of the RFID tag are not deteriorated even if a metal container is used, the communication characteristics of the RFID tag can be excellently maintained irrespective of a material or contents of a container, and the tag can be reduced in thickness/size, and which can use a general-purpose RFID tag as it is and is suitable for a microwave type RFID tag that uses a UHF band or a frequency band of, e.g., 2.45 GHz in particular. There is provided an RFID tag substrateon which an RFID tagthat performs wireless communication with a reader/writer is disposed, comprising: a substrate layer; and a functional layerformed of a high-dielectric-constant layerand a high-permeable layerhaving different characteristics, wherein the functional layer having predetermined relative dielectric constant and relative permeability is provided, and a product of the relative dielectric constant and the relative permeability is not smaller than 250.