Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9954333 | Method of forming a commutator | — | 2018-04-24 |
| 9502849 | Commutator | Chun Cheung, Duncan Yiu Lung Wong, James Ching Sik Lau | 2016-11-22 |
| 9362698 | Brush motor commutator with spark suppression and method for making the same | James Ching Sik Lau | 2016-06-07 |
| 9035529 | Commutator having a plurality of commutator segments and method for making the same | Raven Wai Kei Mok, Zhi Yang Yao, Xiao Jun Yang, Chung Fai Choi, James Ching Sik Lau +2 more | 2015-05-19 |
| 8418351 | Method of manufacturing a commutator | — | 2013-04-16 |
| 7485998 | Commutator | — | 2009-02-03 |