Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4481916 | Helically-shaped intake port of an internal combustion engine | Kiyoshi Nakanishi, Takeshi Okumura, Takeshi Kotani, Tokuta Inoue | 1984-11-13 |
| 4480625 | Internal combustion engine with helical intake port and combustion chamber with two squish areas | Kiyoshi Nakanishi, Takeshi Okumura | 1984-11-06 |
| 4478182 | Helically-shaped intake port of an internal combustion engine | Kiyoshi Nakanishi, Takeshi Okumura, Takeshi Kotani, Tokuta Inoue | 1984-10-23 |
| 4359981 | High compression type internal combustion engine | Kiyoshi Nakanishi, Katsuhiko Motosugi | 1982-11-23 |
| 4350125 | Fuel injection type internal combustion engine | Kiyoshi Nakanishi, Tokuta Inoue | 1982-09-21 |
| 4344408 | Cylinder head, spark plug, and piston configuration | Tokuta Inoue, Kiyoshi Nakanishi, Masahiko Nakada, Toshiharu Matsuura | 1982-08-17 |
| 4267806 | High compression type internal combustion engine | Kiyoshi Nakanishi, Katsuhiko Motosugi | 1981-05-19 |