Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11046553 | Elevator automatic rescue and energy-saving device and control method for same and super capacitor module | Eric Ka Wai Cheng, Eugene Y. Chan, Lok Yan Lorraine Chan | 2021-06-29 |
| 10418825 | Voltage balancing circuit | Ka Wai Eric Cheng, Yuanmao Ye | 2019-09-17 |
| 8833780 | Active suspension system and method | Ka Wai Eric Cheng, Zhu Zhang | 2014-09-16 |
| 8544580 | In-wheel switched reluctance motor drive | Ka Wai Eric Cheng, Chow Norbert Cheung | 2013-10-01 |
| 8228021 | Converter circuit | Ka Wai Eric Cheung | 2012-07-24 |
| 8217618 | Energy-saving controller for three-phase induction motors | Ka Wai Eric Cheng | 2012-07-10 |