Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10828744 | Polishing method, brush-like grinding stone, polishing brush, and linear member aggregate | Norihiko Sumiyoshi | 2020-11-10 |
| 10800359 | Short-range wireless communication system and short-range wireless communication device | — | 2020-10-13 |
| 10751850 | Polishing method, brush-like grinding stone, polishing brush, and linear member aggregate | Norihiko Sumiyoshi | 2020-08-25 |