Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D947332 | Electric heater | Lei Zhang, Jinming Yu | 2022-03-29 |
| 9132542 | Power tool | James Ching Sik Lau, Duncan Yiu Lung Wong, Aloys J. Liu | 2015-09-15 |
| 8648515 | Brush design for electric motor having commutator | James Ching Sik Lau, Duncan Yiu Lung Wong, Yuen Tung Louie | 2014-02-11 |
| 8421380 | Electric motor | James Ching Sik Lau | 2013-04-16 |
| 8415911 | Power tool with a DC brush motor and with a second power source | James Ching Sik Lau | 2013-04-09 |
| 8294328 | Brush gear of a motor | James Ching Sik Lau, Duncan Yiu Lung Wong, Aloys J. Liu | 2012-10-23 |
| 8125117 | Electric motor and rotor therefor | Jian Zhao, Yong Li | 2012-02-28 |
| 8049391 | Electric motor | James Ching Sik Lau, Duncan Yiu Lung Wong, Aloys J. Liu | 2011-11-01 |