Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9975223 | Lightweight ratchet wrench for withstanding higher torque requirements | — | 2018-05-22 |
| 9967938 | Solid state light source device and dimming circuit thereof | Chun-Jong Chang, Chien-Nan Yeh | 2018-05-08 |
| 9884412 | Right angle adapter with an auxiliary handle | — | 2018-02-06 |
| 9867241 | Dimming module and solid state lighting device | Chien-Nan Yeh, Chun-Jong Chang, Kai-Hsiang SHIH, Jhao-Cyuan Huang, Ku-Cheng LIN | 2018-01-09 |
| 9867248 | Dimming module, solid state lighting device, and dimming method | Chien-Nan Yeh, Chun-Jong Chang, Kai-Hsiang SHIH, Jhao-Cyuan Huang, Ku-Cheng LIN | 2018-01-09 |