Issued Patents All Time
Showing 51–75 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4671233 | Cylinder head variable swirl siamese type intake port structure including biasing means diverting mixture flow towards diverting means which bypasses straight intake passage control valve | Yoshihiro Iwashita | 1987-06-09 |
| 4669434 | Internal combustion engine cylinder head variable swirl siamese type intake port structure, with auxiliary straight passage, pointing at spark plug, leading from mixture intake to downstream end of straight intake port | Yoshihiro Iwashita | 1987-06-02 |
| 4586469 | Intake device of an internal combustion engine | Kiyoshi Nakanishi, Souichi Matsushita | 1986-05-06 |
| 4550699 | Intake device of an internal combustion engine | Tomio Warashina, Kiyoshi Nakanishi | 1985-11-05 |
| 4519346 | Helically-shaped intake port of an internal combustion engine | Kiyoshi Nakanishi | 1985-05-28 |
| 4516544 | Helically-shaped intake port of an internal-combustion engine | Kiyoshi Nakanishi, Mikio Nakajima | 1985-05-14 |
| 4505123 | Absorption heat pump system | Hiroyoshi Kusakabe, Hideo Ishiko, Masashi Izumi, Masahiro Furukawa | 1985-03-19 |
| 4503819 | Helically-shaped intake port of an internal-combustion engine | Kiyoshi Nakanishi, Mutsumi Kanda, Takeshi Kotani, Tokuta Inoue | 1985-03-12 |
| 4502432 | Helically shaped intake port of an internal-combustion engine | Kiyoshi Nakanishi, Tokuta Inoue | 1985-03-05 |
| 4485775 | Helically-shaped intake port of an internal-combustion engine | Mutsumi Kanda, Kiyoshi Nakanishi, Takeshi Kotani, Tokuta Inoue | 1984-12-04 |
| 4485774 | Helically-shaped intake port of an internal-combustion engine | Mutsumi Kanda, Kiyoshi Nakanishi, Takeshi Kotani, Tokuta Inoue | 1984-12-04 |
| 4481916 | Helically-shaped intake port of an internal combustion engine | Kiyoshi Nakanishi, Mutsumi Kanda, Takeshi Kotani, Tokuta Inoue | 1984-11-13 |
| 4481915 | Helically-shaped intake port of an internal combustion engine | Kiyoshi Nakanishi, Mutsumi Kanda, Takeshi Kotani, Tokuta Inoue | 1984-11-13 |
| 4480625 | Internal combustion engine with helical intake port and combustion chamber with two squish areas | Mutsumi Kanda, Kiyoshi Nakanishi | 1984-11-06 |
| 4478182 | Helically-shaped intake port of an internal combustion engine | Kiyoshi Nakanishi, Mutsumi Kanda, Takeshi Kotani, Tokuta Inoue | 1984-10-23 |
| 4473040 | Flow control device of a helically-shaped intake port for use in a diesel engine | Masahito Shibata, Kiyoshi Nakanishi, Mutumi Kanda, Tokuta Inoue | 1984-09-25 |
| 4470386 | Flow control device of a helically-shaped intake port | Kiyoshi Nakanishi, Kiyoshi Isogai, Ituo Koga | 1984-09-11 |
| 4466398 | Flow control device of a helically-shaped intake port | Kiyoshi Nakanishi, Tokuta Inoue | 1984-08-21 |
| 4438741 | Device for controlling a flow in a helical type intake port | Kiyoshi Nakanishi, Tokuta Inoue | 1984-03-27 |
| 4411226 | Intake system for an internal combustion engine | Kiyoshi Nakanishi, Tokuta Inoue | 1983-10-25 |
| 4312309 | Helically-shaped intake port of an internal combustion engine | Kiyoshi Nakanishi | 1982-01-26 |
| 4308832 | Helically shaped intake port of an internal combustion engine | Hiroshi Ikeda | 1982-01-05 |
| 4300499 | Combustion chamber of an internal combustion engine | Kiyoshi Nakanishi, Ryuichi Deguchi, Toshio Tanahashi | 1981-11-17 |
| 4296720 | Combustion chamber of an internal combustion engine | Kiyoshi Nakanishi, Ryuichi Deguchi, Toshio Tanahashi | 1981-10-27 |
| 4289099 | Combustion chamber of an internal combustion engine | Kiyoshi Nakanishi, Kazuhiko Ito, Isamu Iezuka, Masao Yasukawa | 1981-09-15 |