WC

Walter Ka Wai Chu

FT Fortune Grand Technology: 1 patents #6 of 15Top 40%
Overall (All Time): #829,754 of 4,157,543Top 20%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
10735841 Dual-mode acoustic radiator speaker system 2020-08-04
10652639 Dual-mode acoustic radiator speaker system 2020-05-12
10468012 Homogeneous hard speaker radiating diaphragms with damping 2019-11-05
9288561 Speaker device 2016-03-15
8699720 Headphones with distortion-free loudness limiting and dynamic equalization device 2014-04-15
8447063 Flat thin dynamic speaker 2013-05-21