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. 01, 2014
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
A method is provided for adding an RF powder to a sheet-like object having a high property value, such as a variety of cards, paper money, and securities. The RF powder makes it very difficult to produce, for example, counterfeit cards, documents and bills. Also, an RF powder-added base sheet to which the RF powder has been added is provided. In the method for adding the RF powder, the RF powder includes a plurality of RF powder particlesand is disposed on a surface of a base sheetto add the RF powder to the base sheet. Each RF powder particlehas a magnetic field coupling circuit element in a high frequency magnetic field having a specific frequency. The RF powder is disposed on a surface of a base sheet by a printing technique. The RF powder-added base sheetincludes an RF powder including a plurality of RF powder particlesdisposed within a printed object on a surface of a base sheet. Each RF powder particlehas a magnetic field coupling circuit element in a high frequency magnetic field having a high frequency.