Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10663779 | Welding helmet with single LCD filter lens | Edward L. Martin, Chia-Hung Chen, James Watkins | 2020-05-26 |
| 10172741 | Power saving welding helmet | Edward L. Martin, Chia-Hung Chen, Jim Watkins | 2019-01-08 |
| 8331001 | Welding filter device and control method thereof | Edward L. Martin, Chia-Hung Chen | 2012-12-11 |
| 7489300 | Programmable optical pointing device | Chin-Hsin Yang | 2009-02-10 |
| 5692632 | Container with a self-contained evacuation lid | Chung-Liang Hsiao | 1997-12-02 |