DC

David Cheung

VI Video Technology Industries: 13 patents #1 of 18Top 6%
RM Rally Manufacturing: 1 patents #9 of 18Top 50%
Overall (All Time): #210,124 of 4,157,543Top 6%
21
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
D699829 Fragrance emitting device for use with a smart phone 2014-02-18
D698913 Fragrance emitting device for use with a smart phone 2014-02-04
8625977 Fragrance emitting apparatus for use with USB port 2014-01-07
8068725 Fragrance emitting apparatus for use with USB port 2011-11-29
8032014 Fragrance emitting apparatus for use with USB port 2011-10-04
7778531 Disposable air freshener configured for connection to USB port 2010-08-17
D534292 Spot light Marc Iacovelli 2006-12-26
5730325 Toy water gun 1998-03-24
D330703 Electronic computer housing Ho L. Tse 1992-11-03
D330048 Electronic educational game housing Yiu H. Wai 1992-10-06
D321384 Electronic driving toy Thomas M. Ko 1991-11-05
D318880 Electronic educational game for teaching children colors, numbers, nursery rhymes and the like Donny Leung 1991-08-06
D318491 Combined keyboard and electronic learning aid Wu T. Yiu, Donny Leung 1991-07-23
D318306 Electronic toy 1991-07-16
D318069 Electronic educational game for introducing children to basic math functions Donny Leung 1991-07-09
D317176 Electronic learning aid 1991-05-28
4968255 Electronic instructional apparatus Albert Lee, Wai-Kwok Chew 1990-11-06
D311523 Housing for an electronic educational video system Wu T. Yiu, Donny Leung 1990-10-23
D309923 Electronic educational game housing 1990-08-14
D308991 Electronic educational game housing 1990-07-03
D308510 Electronic educational game housing 1990-06-12