Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5869783 | Method and apparatus for interactive music accompaniment | Alvin Wen-Yu Su, Liang-Chen Chien, Der-Jang Yu | 1999-02-09 |
| 5852251 | Method and apparatus for real-time dynamic midi control | Alvin Wen-Yu Su, Liang-Chen Chien, Der-Jang Yu | 1998-12-22 |
| 5673452 | Toothbrush | Ching-Lung Chang | 1997-10-07 |
| 5630244 | Elastic toothbrush | — | 1997-05-20 |