Issued Patents 2016
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |