Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6734677 | Device and method for detecting engine combustion condition | Tohru Yoshinaga, Hiroshi Yorita | 2004-05-11 |
| 6725834 | Ignition system with ion current detecting circuit | Hiroshi Yorita, Masatoshi Ikeda | 2004-04-27 |
| 6675784 | Engine ignition system having fail-safe function | Noboru Nagase, Tetsuya Miwa | 2004-01-13 |