Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10491984 | Speaker device | Kazuki Honda, Takafumi Yuasa, Akihisa Kawamura, Toshiyuki Matsumura, Shuji Saiki +3 more | 2019-11-26 |
| 6343132 | Loudspeaker | Suemei Fukuhara, Tatsuya Omori, Toshiyuki Mizutani | 2002-01-29 |