Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11254407 | Watercraft | — | 2022-02-22 |
| 11161575 | Small craft and small craft trailing system | Shu Akuzawa, Yusuke Ashida, Hirotaka Aoki | 2021-11-02 |
| 10661871 | Watercraft | Hirotaka Aoki | 2020-05-26 |
| 10583907 | Small marine vessel | — | 2020-03-10 |
| 10071793 | Jet propulsion boat | Shu Akuzawa | 2018-09-11 |
| 6530812 | Secondary thrust arrangement for small watercraft | Hisato Yamada, Koju Tsukahara, Tsuide Yanagihara, Yusuke Aoyama, Yoshihiro Gahara | 2003-03-11 |
| 6471558 | Ventilation system for watercraft | Akira Nakatsuji, Tomoyoshi Koyanagai | 2002-10-29 |
| 6139381 | Engine air supply conduit for watercraft | Akitaka Suzuki, Takaaki Madachi, Masaru Tamaki | 2000-10-31 |
| 6022250 | Watercraft with twin jet propulsion units | Yoshiki Futaki | 2000-02-08 |
| 5967864 | Twin jet propulsion units | Takaaki Madachi, Yasukiko Henmi | 1999-10-19 |