Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12063468 | Speaker unit and speaker | Kazunori Sato, Yoshio Sakamoto, Hiroshi Tanaka | 2024-08-13 |
| 10231057 | Universal speaker | Kazunori Sato, Kentaro Matsuoka | 2019-03-12 |
| 7391976 | Optical acoustoelectric transducer | Okihiro Kobayashi, Yutaka Hattori, Hiroshi Miyazawa, Junichi Hayakawa | 2008-06-24 |
| 6459798 | Sound-collecting device | Alexander Paritsky, Alexander Kots, Okihiro Kobayashi | 2002-10-01 |