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. 13, 2015
Filed:
Nov. 26, 2007
Yuji Furumura, Yokohama, JP;
Naomi Mura, Tokyo, JP;
Shinji Nishihara, Kokubunji, JP;
Katsuhiro Fujino, Yokohama, JP;
Katsuhiko Mishima, Yokohama, JP;
Susumu Kamihashi, Yokohama, JP;
Yuji Furumura, Yokohama, JP;
Naomi Mura, Tokyo, JP;
Shinji Nishihara, Kokubunji, JP;
Katsuhiro Fujino, Yokohama, JP;
Katsuhiko Mishima, Yokohama, JP;
Susumu Kamihashi, Yokohama, JP;
Philtech Inc., Tokyo, JP;
Abstract
Provided are an RF powder particle, an RF powder, and an RF powder-containing base that can make it difficult to fabricate, for example, forged documents or forged bank notes with respect to sheet-like objects having high proprietary values, such as bank notes, and that allow necessary information to be stored in each of the large number of particles which are each provided with a tank circuit having a predetermined resonant frequency. The RF powder particle includes a coil(inductance element) as a magnetic filed coupling element and a condenser(capacitance element) connected to the both ends of the coil on an insulating surface of a substrateand is configured so as to form a tank circuitby the inductance element and the capacitance element. The tank circuitfunctions as a circuit in a resonance state or in a non-resonance state in accordance with conditions in response to a high-frequency magnetic field from outside.