Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817020 | Ejection structure | Chishen Chang | 2004-11-09 |
| 6728190 | Disc receiver device | Chi-Shen Chang | 2004-04-27 |
| 6717331 | Piezoelectric ultrasonic motor with multi-layer thin disks | Yung-Sung Lan, Ching-Hsing Huang, Chi-Lone Chang, Minsun Ouyang, Yu-Chien Huang +3 more | 2004-04-06 |