Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6807806 | Diagnostic equipment for an exhaust gas cleaning apparatus | Toshio Ihshii | 2004-10-26 |
| 6725709 | Combustion state diagnosing system and combustion state diagnosing method for diagnosing engine and recording medium | Toshio Ishii, Nobuo Kurihara, Hiroshi Kimura | 2004-04-27 |