Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7322118 | Non-contact electronic level | Chaochi Huang, Chih-Yung Cheng, Kung-Ho Su, Shih Chang Chang | 2008-01-29 |
| 7124513 | Three way laser indicator | TN Chen, Sheng-Ching Wu | 2006-10-24 |
| 7022963 | Laser receiver | — | 2006-04-04 |