Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5975042 | Oil supply apparatus of a four-stroke-cycle engine | Toshio Hirabayashi, Masatomi Nijoh | 1999-11-02 |
| 5709185 | Lubricating system for four-stroke-cycle engine | Naohiro Maruyama, Toshio Hirabayashi | 1998-01-20 |
| 5582145 | Four-stroke-cycle engine | Naohiro Maruyama, Yuichi Momose | 1996-12-10 |
| 5279269 | Supercharged 4-cycle engine | Takeshi Yamakoshi | 1994-01-18 |