Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5916132 | Engine exhaust emission control system utilizing a catalyst carried in a porous flexible bag | Hiroyuki Yoshida, Toyokazu Kawasaki | 1999-06-29 |
| 5916135 | Engine exhaust emission control system in outboard engine system | Hiroyuki Yoshida, Toyokazu Kawasaki | 1999-06-29 |
| 5560247 | Exhaust gas sampling device for outboard motor | Kouji Koishikawa | 1996-10-01 |
| 5522746 | Multi-cylinder engine structure and outboard engine | Sadafumi Shidara, Koji Koishikawa, Hiroshi Yamamoto | 1996-06-04 |
| 5445548 | Exhaust gas sampling device for outboard motor | Koji Koishikawa | 1995-08-29 |
| 5383440 | Blow-by gas circulating system for 4-cycle engine | Kouji Koishikawa, Toyokazu Kawasaki | 1995-01-24 |
| 5326293 | Multi-cylinder engine structure and outboard engine | Sadafumi Shidara, Koji Koishikawa, Hiroshi Yamamoto | 1994-07-05 |