Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7544122 | Air shutter and installation method thereof | Sachio Ohwada, Kouichi Tsubata, Shinjirou Akaboshi, Akira Yasutome | 2009-06-09 |
| 7037189 | Air shutter and installation method thereof | Sachio Ohwada, Kouichi Tsubata, Shinjirou Akaboshi, Akira Yasutome | 2006-05-02 |
| 5251075 | Cue signal detecting apparatus | Yoshiyuki Yoshida | 1993-10-05 |