Inventor · disambiguated record
Helen Lai Wa Chan
Also filed as: CHAN HELEN L W · CHAN HELEN LAI WA · CHAN HELEN LAI WAH
8 granted patents·3 pending applications·172 citations·filing 1988–2013
88Inventor score
Files withUNIV HONG KONG POLYTECHNIC5ASM ASSEMBLY AUTOMATION LTD1AUSONICS PTY LTD1COMMW SCIENT IND RES ORG1HAO JIANHUA1
Top patents by PatentIndex Score
11 records- 0186US4963782AMultifrequency composite ultrasonic transducer systemAUSONICS PTY LTD·Filed 1988·Granted Oct 16, 1990·70 cites·26 claims
- 0285US7819013B2Method and apparatus for measuring oscillation amplitude of an ultrasonic deviceUNIV HONG KONG POLYTECHNIC·Filed 2006·Granted Oct 26, 2010·26 cites·19 claims
- 0377US6286747B1Ultrasonic transducerUNIV HONG KONG POLYTECHNIC·Filed 2000·Granted Sep 11, 2001·30 cites·5 claims
- 0472US7494601B2Piezoelectric ceramic composition and the method for preparing the sameUNIV HONG KONG POLYTECHNIC·Filed 2006·Granted Feb 24, 2009·4 cites·9 claims
- 0564US5297436AOptical fibre ultrasonic sensorCOMMW SCIENT IND RES ORG·Filed 1989·Granted Mar 29, 1994·22 cites·17 claims
- 0653US8999506B2Method of one-pot synthesis of water-soluble nanoparticles exhibiting up-conversion luminescenceHAO JIANHUA·Filed 2012·Granted Apr 7, 2015·2 cites·25 claims
- 0750US6871770B2Ultrasonic transducerASM ASSEMBLY AUTOMATION LTD·Filed 2003·Granted Mar 29, 2005·8 cites·16 claims
- 0844US2013285785A1Low temperature co-fired ceramic device and a method of manufacturing thereofNANO & ADVANCED MATERIALS INST LTD·Filed 2013·Application pending·0 cites
- 0943US2008128527A1Liquid dispensing apparatus based on piezoelectrically driven hollow hornUNIV HONG KONG POLYTECHNIC·Filed 2006·Application pending·0 cites
- 1038US6190497B1Ultrasonic transducerUNIV HONG KONG POLYTECHNIC·Filed 1999·Granted Feb 20, 2001·10 cites·5 claims
- 1125US2003062395A1Ultrasonic transducerFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →