Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4470386 | Flow control device of a helically-shaped intake port | Takeshi Okumura, Kiyoshi Nakanishi, Kiyoshi Isogai | 1984-09-11 |
| 4467750 | Flow control device of a helically-shaped intake port | Kiyoshi Isogai, Yutaka Yamada, Kazumi Haruta | 1984-08-28 |
| 4466395 | Flow control device of a helically-shaped intake port | Shinichi Kato, Yoshihiko Dohi, Katsuhiko Motosugi | 1984-08-21 |
| 4466397 | Flow control device of a helically-shaped intake port | Shinichi Kato, Katsuhiko Motosugi, Kiyoshi Isogai, Naka Takita | 1984-08-21 |
| 4466396 | Flow control device of a helically-shaped intake port | Kiyoshi Nakanishi | 1984-08-21 |
| 4466394 | Flow control device of a helically-shaped intake port | Katsuhiko Motosugi, Masatami Takimoto | 1984-08-21 |
| 4462349 | Flow control device of a helically-shaped intake port for use in a diesel engine | Katsuhiko Motosugi | 1984-07-31 |
| 4457272 | Flow control device of a helically-shaped intake port | — | 1984-07-03 |