Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10212473 | Portable information processing device and media data replay system | Yasuo Masaki | 2019-02-19 |
| 9357257 | Portable information processing device and media data replay system | Yasuo Masaki | 2016-05-31 |
| 9237375 | Portable information processing device | Yasuo Masaki | 2016-01-12 |