Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6553928 | Small watercraft having an improved structure of storage compartment | Kenichi Otsuka | 2003-04-29 |
| 6530812 | Secondary thrust arrangement for small watercraft | Satoshi Koyano, Koju Tsukahara, Tsuide Yanagihara, Yusuke Aoyama, Yoshihiro Gahara | 2003-03-11 |
| 6276290 | Small watercraft having an improved structure of storage compartment | Kenichi Otsuka | 2001-08-21 |
| 6041727 | Sponson for watercraft | Mitsuhisa Hirano, Yasukazu Kojima | 2000-03-28 |
| 5699749 | Exhaust system, hull, and speed indicator for watercraft | Mitsuhisa Hirano, Yasukazu Kojima | 1997-12-23 |
| 5372406 | Wheel cover for automobile | Noboru Ohtsuka, Masakazu Iwatsuki | 1994-12-13 |