Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11932748 | Di(2-ethylhexyl) terephthalate composition | Chih-Hung Chang | 2024-03-19 |
| 9451349 | Earphone assembly with moisture resistance | Timothy K. Wickstrom, William J. Ballad, Ying-Tzu Chan, Jen Nan Feng | 2016-09-20 |
| 9078064 | Earphone assembly with moisture resistance | Timothy K. Wickstrom, William J. Ballad, Ying-Tzu Chan, Jen Nan Feng | 2015-07-07 |
| 8532323 | Earphone assembly with moisture resistance | Timothy K. Wickstrom, William J. Ballad, Ying-Tzu Chan, Jen Nan Feng | 2013-09-10 |