Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8189823 | Speaker system | Seiichi Tezuka | 2012-05-29 |
| 6658128 | Horn loudspeaker | Yasuhiro Fukunaka, Hiroshi Kubota, Ken Iwayama | 2003-12-02 |
| 5715322 | Throat device interconnecting a plurality of drive units and a horn | Tsuyoshi Takagi, Hiroshi Kubota | 1998-02-03 |
| 5483506 | Radio receiver with playback means | Kenichi Ozawa | 1996-01-09 |
| 5285025 | Loudspeaker horn | — | 1994-02-08 |
| 4451518 | Reinforcing member | Toshikatu Miura, Hiroto Kikuchi, Yukio Okada | 1984-05-29 |
| 4369608 | Panel for automobile | Toshikatsu Miura, Hiroto Kikuchi, Yukio Okada | 1983-01-25 |