SEMICONDUCTOR DEVICE FOR ARTICLE IDENTIFICATION USING INTERMODULATION PRODUCT OF DIFFERENT INTERROGATION FREQUENCIES

Details for Australian Patent Application No. 2002359783 (hide)

Owner RAYTHEON COMPANY

Inventors EHLERS, Gerald, L.; CHARTERS, Jay, P.

Pub. Number AU-A-2002359783

PCT Number PCT/US02/40933

PCT Pub. Number WO2003/058550

Priority 10/033,080 26.12.01 US

Filing date 23 December 2002

Wipo publication date 24 July 2003

International Classifications

G06K 019/067 Record carriers for use with machines and with at least a part designed to carry digital markings - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards

G06K 007/08 Methods or arrangements for sensing record carriers - by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes

G06K 007/10 Methods or arrangements for sensing record carriers - by electromagnetic radiation, e.g. optical sensing

Event Publications

3 April 2003 Complete Application Filed

  Priority application(s): 10/033,080 26.12.01 US

4 September 2003 Application Open to Public Inspection

  Published as AU-A-2002359783

23 September 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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