Inventor · disambiguated record
Eric Ka Wai Cheng
Also filed as: CHENG ERIC · CHENG ERIC KA WAI
3 granted patents·1 pending application·25 citations·filing 1998–2015
67Inventor score
Top patents by PatentIndex Score
4 records- 0170US7781987B2Method and system for automatically controlling power supply to a lamp of a vehicleUNIV HONG KONG POLYTECHNIC·Filed 2008·Granted Aug 24, 2010·9 cites·9 claims
- 0261US11046553B2Elevator automatic rescue and energy-saving device and control method for same and super capacitor moduleFORWARD ELECTRONICS COMPANY LTD·Filed 2015·Granted Jun 29, 2021·2 cites·18 claims
- 0337US6078277AArrangement and method for producing a plurality of pulse width modulated signalsMOTOROLA INC·Filed 1998·Granted Jun 20, 2000·14 cites·5 claims
- 0437US2008315684A1Square-wave modulated voltage dip restorerUNIV HONG KONG POLYTECHNIC·Filed 2007·Application pending·0 cites
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