Inventor · disambiguated record
David Cheung
Also filed as: CHEUNG DAVID · CHEUNG DAVID T · CHEUNG DAVID TAT WAI
21 granted patents·2 pending applications·468 citations·filing 1987–2013
96Inventor score
Top patents by PatentIndex Score
23 records- 0193US8068725B2Fragrance emitting apparatus for use with USB portCHEUNG DAVID·Filed 2009·Granted Nov 29, 2011·22 cites·11 claims
- 0292US8032014B2Fragrance emitting apparatus for use with USB portCHEUNG DAVID·Filed 2007·Granted Oct 4, 2011·24 cites·20 claims
- 0392US4968255AElectronic instructional apparatusVIDEO TECHNOLOGY IND INC·Filed 1988·Granted Nov 6, 1990·223 cites·17 claims
- 0491US8625977B2Fragrance emitting apparatus for use with USB portCHEUNG DAVID·Filed 2013·Granted Jan 7, 2014·11 cites·7 claims
- 0588US7778531B2Disposable air freshener configured for connection to USB portCHEUNG DAVID·Filed 2008·Granted Aug 17, 2010·14 cites·14 claims
- 0684USD318880SElectronic educational game for teaching children colors, numbers, nursery rhymes and the likeVIDEO TECH INDUSTRIES INC·Filed 1989·Granted Aug 6, 1991·23 cites·1 claims
- 0782USD318306SElectronic toyVIDEO TECH INDUSTRIES INC·Filed 1988·Granted Jul 16, 1991·20 cites·1 claims
- 0874USD318069SElectronic educational game for introducing children to basic math functionsVIDEO TECH INDUSTRIES INC·Filed 1989·Granted Jul 9, 1991·15 cites·1 claims
- 0971USD308510SElectronic educational game housingVIDEO TECH INDUSTRIES INC·Filed 1987·Granted Jun 12, 1990·13 cites·1 claims
- 1070US5730325AToy water gunFiled 1996·Granted Mar 24, 1998·34 cites·15 claims
- 1164USD308991SElectronic educational game housingVIDEO TECH INDUSTRIES INC·Filed 1987·Granted Jul 3, 1990·10 cites·1 claims
- 1263USD330048SElectronic educational game housingVIDEO TECH INDUSTRIES INC·Filed 1990·Granted Oct 6, 1992·14 cites·1 claims
- 1362USD309923SElectronic educational game housingVIDEO TECH INDUSTRIES INC·Filed 1987·Granted Aug 14, 1990·9 cites·1 claims
- 1460USD534292SSpot lightRALLY MFG INC·Filed 2005·Granted Dec 26, 2006·11 cites·1 claims
- 1560USD321384SElectronic driving toyVIDEO TECH INDUSTRIES INC·Filed 1989·Granted Nov 5, 1991·11 cites·1 claims
- 1655US2012298770A1Fragrance Emitting Apparatus For Use With USB PortCHEUNG DAVID·Filed 2011·Application pending·0 cites
- 1746USD317176SElectronic learning aidVIDEO TECH INDUSTRIES INC·Filed 1988·Granted May 28, 1991·4 cites·1 claims
- 1842USD330703SElectronic computer housingVIDEO TECH INDUSTRIES INC·Filed 1990·Granted Nov 3, 1992·6 cites·1 claims
- 1942US2008002606A1Identification of wireless devices based on signal characteristicsCHEUNG DAVID·Filed 2006·Application pending·0 cites
- 2040USD311523SHousing for an electronic educational video systemVIDEO TECH INDUSTRIES INC·Filed 1988·Granted Oct 23, 1990·4 cites·1 claims
- 2130USD699829SFragrance emitting device for use with a smart phoneCHEUNG DAVID·Filed 2013·Granted Feb 18, 2014·0 cites·1 claims
- 2230USD698913SFragrance emitting device for use with a smart phoneCHEUNG DAVID·Filed 2013·Granted Feb 4, 2014·0 cites·1 claims
- 2326USD318491SCombined keyboard and electronic learning aidVIDEO TECH INDUSTRIES INC·Filed 1988·Granted Jul 23, 1991·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →