Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5634952 | Exhaust gas filter and apparatus for treating exhaust gases using the same | Yoshiro Ono, Ikuko Ishiyama | 1997-06-03 |
| 5629067 | Ceramic honeycomb structure with grooves and outer coating, process of producing the same, and coating material used in the honeycomb structure | Wataru Kotani, Kunikazu Hamaguchi | 1997-05-13 |
| 5595581 | Exhaust gas filter and apparatus for treating exhaust gases | Yukihito Ichikawa, Yoshiro Ono | 1997-01-21 |
| 5592925 | Exhaust gas recirculation device for internal combustion engine | Minoru Machida, Toshio Yamada, Yukihito Ichikawa | 1997-01-14 |