Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12058483 | Speaker grill and speaker device | Kazunori Tanaka | 2024-08-06 |
| 11240575 | Speaker grill and speaker device | Kazunori Tanaka | 2022-02-01 |
| 10477317 | Speaker structure | Yumi Shimada, Katsumasa KOSUGE | 2019-11-12 |