Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11144140 | System and method for bidirectional communication between stylus and stylus sensor controller | Sadao Yamamoto | 2021-10-12 |
| 11003260 | Stylus and sensor control circuit | Sadao Yamamoto | 2021-05-11 |