Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D895727 | Writing instrument | — | 2020-09-08 |
| 7369655 | Telephone handset universal connector | — | 2008-05-06 |
| 7347139 | Food purifier | George Cheung, June Tok Lee, Wai Choi | 2008-03-25 |
| 4508958 | Ceiling fan with heating apparatus | Frederick S. C. Kan, Kam-Wing Li | 1985-04-02 |