Multi-loop antenna for radio frequency identification (RFID) communication

Details for Australian Patent Application No. 2005215971 (hide)

Owner 3M Innovative Properties Company

Inventors Goff, Edward D.; Stolberg, Leroy; Lieffort, Seth A.

Agent Freehills

Pub. Number AU-A-2005215971

PCT Pub. Number WO2005/081808

Priority 10/784,124 20.02.04 US

Filing date 7 January 2005

Wipo publication date 9 September 2005

International Classifications

G06K 7/08 (2006.01) 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

H01Q 1/22 (2006.01) Details of, or arrangements associated with, aerials - by structural association with other equipment or articles

H01Q 1/38 (2006.01) Details of, or arrangements associated with, aerials - formed by a conductive layer on an insulating support

H01Q 7/00 (2006.01) Loop aerials with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

H01Q 21/29 (2006.01) Aerial arrays or systems

Event Publications

7 September 2006 PCT application entered the National Phase

  PCT publication WO2005/081808 Priority application(s): WO2005/081808

6 August 2009 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(c). A direction to request examination has been given for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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