Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7152443 | Lockable case | Chien-Ta Lin, Kuo-Kuang Liu | 2006-12-26 |
| 6637066 | Method for making comfortable bathing scrubber | — | 2003-10-28 |
YC
Yun-Yi Chang
Overall (All Time): #2,175,496 of 4,157,543Top 55%
2
Patents All Time