Inventor
HO WING
US10 patents
Patents
10 patentsUS5313192AMay 17, 1994
Deactivatable/reactivatable magnetic marker having a step change in magnetic flux
SENSORMATIC ELECTRONICS CORP63 citations95
US6057766AMay 2, 2000
Iron-rich magnetostrictive element having optimized bias-field-dependent resonant frequency characteristic
SENSORMATIC ELECTRONICS CORP35 citations92
US5519379AMay 21, 1996
Multi-thread re-entrant marker with simultaneous switching
SENSORMATIC ELECTRONICS CORP24 citations92
US7215250B2May 8, 2007
Proximity detaching for electronic article surveillance tags
SENSORMATIC ELECTRONICS CORP39 citations91
US5940362AAug 17, 1999
Disc device having a magnetic layer overweighing the information signal pattern for electronic article surveillance
SENSORMATIC ELECTRONICS CORP20 citations91
US5351033ASep 27, 1994
Semi-hard magnetic elements and method of making same
SENSORMATIC ELECTRONICS CORP33 citations91
US5565849AOct 15, 1996
Self-biased magnetostrictive element for magnetomechanical electronic article surveillance systems
SENSORMATIC ELECTRONICS CORP44 citations90
US5835016ANov 10, 1998
Multi-thread re-entrant marker with transverse anisotropy flux concentrators
SENSORMATIC ELECTRONICS CORP17 citations83
US5949334ASep 7, 1999
Magnetostrictive element having optimized bias-field-dependent resonant frequency characteristic
SENSORMATIC ELECTRONICS CORP10 citations73
US6489891B1Dec 3, 2002
Apparatus for electronic article surveillance tag pollution reduction
SENSORMATIC ELECTRONICS CORP13 citations70