Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825822 | Rocker arm arrangement for multi-valve internal combustion engine | Shigeo Muranaka, Shigeru Kamegaya, Yutaka Matayoshi | 1989-05-02 |
| 4651693 | Swirl control arrangement for internal combustion engine | Yasuo Nakajima, Katsunori Terakasa | 1987-03-24 |
| 4491965 | Character recognition apparatus | — | 1985-01-01 |
| 4459804 | Multiple spark ignition internal combustion engine with exhaust gas recirculation | Yasuo Nakajima, Yoshimasa Hayashi | 1984-07-17 |
| 4350129 | Spark-ignition internal combustion engine capable of preventing noxious gas emissions | Yasuo Nakajima, Yoshimasa Hayashi, Shin-ichi Nagumo | 1982-09-21 |
| 4202306 | Multi-point spark ignition engine provided with exhaust recirculation circuit | Yasuo Nakajima, Yoshimasa Hayashi | 1980-05-13 |