Radio frequency circuit and memory in thin flexible package
September 9, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesElectronic security card and system for authenticating card ownership Monitoring system for vehicles Process for manufacturing electronic modules for microcircuit cards System for detecting a transfer of an article Single chip transponder device Personal locator transmitter Smart card access control system Data altering means for multi-memory electronic identification tag Portable security system using communicating cards Patent #: 5396218 InventorsApplicationNo. 303977 filed on 09/09/1994US Classes:340/572.7, Specified antenna structure29/825, Conductor or circuit manufacturing29/829, On flat or curved insulated base, e.g., printed circuit, etc.29/836, Different components340/5.6, Coded record input (e.g., IC card or key)340/10.1Interrogation responseExaminersPrimary: Swann, GlenAttorney, Agent or FirmForeign Patent References
International ClassH04Q 001/02AbstractA novel thin and flexible radio frequency (RF) tag has a semiconductor circuit with logic, memory, and a radio frequency circuits, connected to an antenna with all interconnections placed on a single plane of wiring without crossovers. The elements of the package (substrate, antenna, and laminated covers) are flexible. The elements of the package are all thin. The tag is thin and flexible, enabling a unique range of applications including: RF ID tagging of credit cards, passports, admission tickets, and postage stamps.Other References
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