Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848212 | Internal combustion engine piston with two compression rings having reduced oil consumption | Tamenori Kawano, Atsushi Nakazawa, Takasi Nagano | 1989-07-18 |
| 4656711 | Method for determining piston form for an internal combustion engine | Toshiro Yagi | 1987-04-14 |