Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11128956 | Edge of diaphragm and speaker unit | Kohei Kikuchi | 2021-09-21 |
| 10993018 | Speaker apparatus | Kohei Kikuchi, Yohei Fukuma, Kazuhiro Matsutani, Yoshio Ohashi, Yasuo Kawabata | 2021-04-27 |