Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6470674 | Deterioration detecting apparatus and method for engine exhaust gas purifying device | Masahiko Yamaguchi, Masaaki Nakayama | 2002-10-29 |
| 6463735 | Apparatus for detecting deterioration of exhaust gas purifying catalysts | Masaaki Nakayama, Naoki Yoshiume, Masahiko Yamaguchi | 2002-10-15 |
| 6343467 | Air-fuel ratio control apparatus and method for internal combustion engine | Hidenobu Muto, Hisashi Iida | 2002-02-05 |