Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9681240 | Sound quality adjustment apparatus of approaching vehicle audible system, approaching vehicle audible system simulator, and approaching vehicle audible system | Takahisa Aoyagi, Yoichi Kato | 2017-06-13 |
| 9434306 | Notification sound control unit of approaching vehicle audible system | Takahisa Aoyagi, Ryotaro Suzuki | 2016-09-06 |
| 9299362 | Audio signal processing device | Masaru Kimura, Bunkei Matsuoka, Takashi Yamazaki | 2016-03-29 |
| 9162619 | Notification sound control unit of approaching vehicle audible system | Takahisa Aoyagi, Youichi Kato, Noritaka Kokido, Satoru Inoue | 2015-10-20 |
| 8712615 | Artificial engine sound control unit, approaching vehicle audible system, and electric vehicle having them | Mutsuo Sekiya, Tatsuya Mitsugi | 2014-04-29 |
| 8618958 | Navigation device | Takuya Taniguchi, Takahisa Aoyagi, Yoshihiko Mori | 2013-12-31 |
| 8121755 | Sound-directed-outside-vehicle emitting device | Takahisa Aoyagi, Takuya Taniguchi, Noritaka Kokido | 2012-02-21 |