Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11023057 | Stylus structure having a barrier unit for contacting with a trigger component | Yi-Chih Chang, Ju-Ming Lin | 2021-06-01 |
| 10895930 | Message erasing device and message erasing system | Yi-Chih Chang | 2021-01-19 |