CH

Charles Andrew Van Hasselt

AL Ace Communications Limited: 4 patents #3 of 7Top 45%
Overall (All Time): #1,180,423 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
10356535 Method and system for self-managed sound enhancement Pui Tong Paul Lee, Chi Shan Anna Kam, Ka Kui Cheng 2019-07-16
9782131 Method and system for self-managed sound enhancement Chi Shan Anna Kam, Pui Tong Paul Lee, Ka Kui Cheng 2017-10-10
9468401 Method and system for self-managed sound enhancement Chi Shan Anna Kam, Pui Tong Paul Lee, Ka Kui Cheng 2016-10-18
9138178 Method and system for self-managed sound enhancement Pui Tong Paul Lee, Ka Kui Cheng, Ka Keung John Sung, Ka Cheong Terence Wong, Tan Lee +1 more 2015-09-22