Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8885863 | Loudspeaker device | Yuji Takashima | 2014-11-11 |
| 5226087 | Microphone apparatus | Kiminori Ono, Michio Matsumoto, Hiroshi Kobayashi, Yuji Yamashina | 1993-07-06 |
| 5193117 | Microphone apparatus | Kiminori Ono, Michio Matsumoto, Hiroshi Kobayashi, Yuuji Yamashina | 1993-03-09 |
| 4747132 | Howling canceller | Satoru Ibaraki, Hiroki Furukawa | 1988-05-24 |