Inventor · disambiguated record
Chan Ching
Also filed as: CHING CHAN · CHING CHAN YU
42 granted patents·3 pending applications·804 citations·filing 2000–2019
98Inventor score
Top patents by PatentIndex Score
45 records- 0196USD538297SMP3 playerPERFECT UNION CO LTD·Filed 2005·Granted Mar 13, 2007·76 cites·1 claims
- 0296USD456066SElectric heaterPERFECT UNION CO LTD·Filed 2001·Granted Apr 23, 2002·71 cites·1 claims
- 0392USD616080SElectric heaterPERFECT UNION CO LTD·Filed 2009·Granted May 18, 2010·46 cites·1 claims
- 0491USD483102SElectric heaterPERFECT UNION CO LTD·Filed 2002·Granted Dec 2, 2003·41 cites·1 claims
- 0591USD467324SElectric heaterPERFECT UNION CO LTD·Filed 2002·Granted Dec 17, 2002·43 cites·1 claims
- 0690USD499473STower heaterPERFECT UNION CO LTD·Filed 2003·Granted Dec 7, 2004·40 cites·1 claims
- 0789USD680636SElectronic humidifier and heaterCHING CHAN·Filed 2012·Granted Apr 23, 2013·42 cites·1 claims
- 0885USD467325SElectric heaterPERFECT UNION CO LTD·Filed 2002·Granted Dec 17, 2002·30 cites·1 claims
- 0982USD530002SIndustrial heaterPERFECT UNION CO LTD·Filed 2004·Granted Oct 10, 2006·25 cites·1 claims
- 1081USD518019SMP3 playerPERFECT UNION CO LTD·Filed 2005·Granted Mar 28, 2006·27 cites·1 claims
- 1177USD483101SElectric heaterPERFECT UNION CO LTD·Filed 2002·Granted Dec 2, 2003·21 cites·1 claims
- 1276USD546430SElectric heaterPERFECT UNION CO LTD·Filed 2006·Granted Jul 10, 2007·21 cites·1 claims
- 1375USD502165SMP3 playerPERFECT UNION CO LTD·Filed 2004·Granted Feb 22, 2005·19 cites·1 claims
- 1474USD617440SChargeable fanPERFECT UNION CO LTD·Filed 2010·Granted Jun 8, 2010·20 cites·1 claims
- 1574USD456499SElectric ceramic heaterPERFECT UNION CO LTD·Filed 2001·Granted Apr 30, 2002·19 cites·1 claims
- 1672USD532880SCeramic electric heaterPERFECT UNION CO LTD·Filed 2005·Granted Nov 28, 2006·19 cites·1 claims
- 1771USD518817SMultimedia speaker setPERFECT UNION CO LTD·Filed 2004·Granted Apr 11, 2006·16 cites·1 claims
- 1870USD538415SCeramic electric heaterPERFECT UNION CO LTD·Filed 2005·Granted Mar 13, 2007·17 cites·1 claims
- 1970USD532884SElectric heaterPERFECT UNION CO LTD·Filed 2006·Granted Nov 28, 2006·17 cites·1 claims
- 2069USD532881SElectric heaterPERFECT UNION CO LTD·Filed 2005·Granted Nov 28, 2006·16 cites·1 claims
- 2167US8894049B2Fan heater with humidifierCHING CHAN·Filed 2012·Granted Nov 25, 2014·2 cites·5 claims
- 2267USD671095SMultimedia speakerCHING CHAN·Filed 2011·Granted Nov 20, 2012·14 cites·1 claims
- 2366USD565029SMultimedia speaker setPERFECT UNION CO LTD·Filed 2006·Granted Mar 25, 2008·14 cites·1 claims
- 2465USD499472SElectric heaterPERFECT UNION CO LTD·Filed 2003·Granted Dec 7, 2004·13 cites·1 claims
- 2564USD674067SBedside cabinet electronic heaterPERFECT UNION CO LTD·Filed 2012·Granted Jan 8, 2013·12 cites·1 claims
- 2664USD546429SElectric heaterPERFECT UNION CO LTD·Filed 2006·Granted Jul 10, 2007·13 cites·1 claims
- 2764US7118407B2Power plug with overloaded displayPERFECT UNION CO LTD·Filed 2004·Granted Oct 10, 2006·13 cites·7 claims
- 2863US7450356B2Rotation speed controller for fansPERFECT UNION CO LTD·Filed 2006·Granted Nov 11, 2008·2 cites·1 claims
- 2962USD545950SElectric heaterPERFECT UNION CO LTD·Filed 2006·Granted Jul 3, 2007·12 cites·1 claims
- 3062USD437397SElectric heaterPERFECT UNION CO LTD·Filed 2000·Granted Feb 6, 2001·12 cites·1 claims
- 3159USD643913SBaseboard heaterCHING CHAN·Filed 2011·Granted Aug 23, 2011·10 cites·1 claims
- 3254USD499474SConvection heaterPERFECT UNION CO LTD·Filed 2003·Granted Dec 7, 2004·8 cites·1 claims
- 3353USD630187SPortable speakerCHING CHAN·Filed 2007·Granted Jan 4, 2011·8 cites·1 claims
- 3453USD567347SElectric heaterPERFECT UNION CO LTD·Filed 2006·Granted Apr 22, 2008·8 cites·1 claims
- 3553USD545952SElectric heaterPERFECT UNION CO LTD·Filed 2006·Granted Jul 3, 2007·8 cites·1 claims
- 3650USD566690SMultimedia speakerPERFECT UNION CO LTD·Filed 2006·Granted Apr 15, 2008·7 cites·1 claims
- 3750US2021002438A1Flexible particle-laden elastomeric textiles with penetration resistanceSELVAGANAPATHY PONNAMBALAM RAVI·Filed 2019·Application pending·0 cites
- 3849USD612036SAir filterPERFECT UNION CO LTD·Filed 2009·Granted Mar 16, 2010·6 cites·1 claims
- 3947US6265698B1Overheating protector for heatersPERFECT UNION CO LTD·Filed 2000·Granted Jul 24, 2001·2 cites·4 claims
- 4044USD561174SMultimedia speakerPERFECT UNION CO LTD·Filed 2006·Granted Feb 5, 2008·5 cites·1 claims
- 4144USD532879SElectric heaterPERFECT UNION CO LTD·Filed 2005·Granted Nov 28, 2006·5 cites·1 claims
- 4242US2011268567A1Cooling or heating fan magnetically attachable to metal boardCHING CHAN·Filed 2010·Application pending·0 cites
- 4338US2005197010A1Safety plugPERFECT UNION CO LTD·Filed 2004·Application pending·0 cites
- 4437USD652903SElectric heaterCHING CHAN·Filed 2010·Granted Jan 24, 2012·2 cites·1 claims
- 4536USD557779SElectric heaterPERFECT UNION CO LTD·Filed 2006·Granted Dec 18, 2007·2 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →