Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6752671 | Water jet propulsion type outboard engine | Eiichi Ishigaki, Koji Ishimoto, Takahiro Goto, Kazuhisa Ishimura | 2004-06-22 |
| 5989083 | Water jet propulsion device for vessels | Eiichi Ishigaki | 1999-11-23 |
| 5487644 | Pump having a single or a plurality of helical blades | Eiichi Ishigaki, Takaharu Honda | 1996-01-30 |