Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12197992 | Power adapter | Ka Kui Cheng, Kin Hin WONG | 2025-01-14 |
| 10356535 | Method and system for self-managed sound enhancement | Charles Andrew Van Hasselt, Chi Shan Anna Kam, Ka Kui Cheng | 2019-07-16 |
| 10057683 | System for fitting audio signals for in-use ear | Ka Kui Cheng | 2018-08-21 |
| 9782131 | Method and system for self-managed sound enhancement | Charles Andrew Van Hasselt, Chi Shan Anna Kam, Ka Kui Cheng | 2017-10-10 |
| 9584920 | System for fitting audio signals for in-use ear | Ka Kui Cheng | 2017-02-28 |
| 9468401 | Method and system for self-managed sound enhancement | Charles Andrew Van Hasselt, Chi Shan Anna Kam, Ka Kui Cheng | 2016-10-18 |
| 9138178 | Method and system for self-managed sound enhancement | Ka Kui Cheng, Ka Keung John Sung, Ka Cheong Terence Wong, Charles Andrew Van Hasselt, Tan Lee +1 more | 2015-09-22 |