Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7241099 | Center ball O-ring | Huan-Liang Tzeng, Jeng-Horng Hsieh | 2007-07-10 |
| 6863772 | Dual-port end point window for plasma etcher | Ping-Jen Cheng, Huan-Liang Tzeng | 2005-03-08 |
| 6844082 | Gas distribution plate with anodized alumnium coating | Huan-Liang Tzeng, Ping-Jen Cheng | 2005-01-18 |