Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8186335 | Load control mechanism for internal combustion engine | Yoichi Ishibashi | 2012-05-29 |
| 7628145 | Control method of compression self ignition internal combustion engine | Yoichi Ishibashi, Shunsuke Kitawaki | 2009-12-08 |
| 5115883 | Loudspeaker | Yasuo Gan, Koushiro Kogure, Takashi Ooyaba | 1992-05-26 |
| 5117463 | Speaker system having directivity | Takashi Oyaba, Yasuo Gan, Naobumi Kanemaki | 1992-05-26 |
| 4991687 | Speaker system having directivity | Takashi Oyaba, Yasuo Gan, Naobumi Kanemaki | 1991-02-12 |