A resonant tag is provided that comprises a circuit-like metallic foil pattern that is adhered to a dielectric film prepared from a liquid resin by a coating process. The circuit-like metal foil pattern on one side of the dielectric film may be so aligned with the circuit-like metal foil pattern on the...http://www.google.es/patents/US6458465?utm_source=gb-gplus-sharePatente US6458465 - Circuit-like metallic foil sheet and the like and process for producing them
Circuit-like metallic foil sheet and the like and process for producing them
