Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10459539 | Electronic pen and electronic pen main body | Ryoji Kamiyama | 2019-10-29 |
| 10345930 | Magnetic core coil and electronic pen | Masamitsu Ito, Shigeru Yamashita, Hidetaka Takiguchi, Ryoji Kamiyama | 2019-07-09 |