Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6863043 | Multi-position, operator-carried, four-cycle engine | Katsumi Kurihara, Shiro Kawamoto | 2005-03-08 |
| 6666184 | Multi-position, operator-carried, four-cycle engine | Katsumi Kurihara, Shiro Kawamoto | 2003-12-23 |
| 6363904 | Multi-position, operator-carried, four-cycle engine | Katsumi Kurihara, Shiro Kawamoto | 2002-04-02 |
| 6047678 | Multi-position operator-carried four-cycle engine | Katsumi Kurihara, Shiro Kawamoto | 2000-04-11 |
| 5247845 | Power takeoff adapter for drive shaft | — | 1993-09-28 |
| 5058542 | Rocker box cover assembly for internal combustion engine | Thomas L. Barnhardt | 1991-10-22 |
| 5040503 | Air and fuel delivery apparatus | Robert J. Schwabe | 1991-08-20 |