Inventor
CHOY CHUNG LOONG
HK3 patents
Patents
3 patentsUS6286747B1Sep 11, 2001
Ultrasonic transducer
UNIV HONG KONG POLYTECHNIC30 citations89
US6597084B2Jul 22, 2003
Ring-shaped piezoelectric transformer having an inner and outer electrode
UNIV HONG KONG POLYTECHNIC15 citations75
US6190497B1Feb 20, 2001
Ultrasonic transducer
UNIV HONG KONG POLYTECHNIC10 citations67