Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12225342 | Coaxial speaker horn, and coaxial speaker | Hiroyuki Shiojima, Bahari Satriyo | 2025-02-11 |
| 10972818 | Mounting tool and speaker device | — | 2021-04-06 |
| 10924831 | Speaker device | — | 2021-02-16 |
| 10516926 | Speaker unit mounting bracket, and installation speaker using the same | Masanori KAMIHARA, Masao Yoshida, Shotaro Kondo | 2019-12-24 |
| 9843848 | Speaker unit | Hiroyuki Shiojima, Kazuya Atsumi, Satoshi Hayakawa | 2017-12-12 |
| 9774937 | Speaker unit | Hiroyuki Shiojima, Kazuya Atsumi, Satoshi Hayakawa | 2017-09-26 |
| 6792122 | Acoustic device | Haruo Okada, Shunichi Takahashi, Takashi Ohyaba, Tohru Nagatani | 2004-09-14 |
| 5590208 | Speaker system | Shinji Koyano, Koushirou Kogure, Takashi Ohyaba, Makoto Sakakibara | 1996-12-31 |