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, Shujiro Morinaga | 2002-10-29 |
| 6463735 | Apparatus for detecting deterioration of exhaust gas purifying catalysts | Shujiro Morinaga, Naoki Yoshiume, Masahiko Yamaguchi | 2002-10-15 |
| 6338329 | Blow-by gas passage abnormality detecting system for internal combustion engines | Yoshinori Maegawa | 2002-01-15 |