Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6653767 | Spark plug and ignition apparatus | Hitoshi Morita, Shinichi Okabe, Takehiko Kato, Keiji Kanao, Tetsuya Miwa | 2003-11-25 |
| 6653840 | Ion current detecting device for internal combustion engine | Masatoshi Ikeda, Makoto Toriyama, Tohru Yoshinaga | 2003-11-25 |
| 6557537 | Ion current detection system and method for internal combustion engine | Masatoshi Ikeda, Makoto Toriyama | 2003-05-06 |