Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7634183 | Focus adjustable method of optical image | Chih-Chien Chang | 2009-12-15 |
| 7492352 | Optical computer pointer and optical cursor/frame control method | Wen-Hao Hsu, Hsaing-Nan Chen | 2009-02-17 |
| 7248348 | Detection method and device for detecting quality of optical element | Hsaing-Nan Chen | 2007-07-24 |