Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5628975 | Method for purifying exhaust gas from a diesel engine | Noboru Miyake, Toshimasa Kushihara, Koichi Saito | 1997-05-13 |
| 5610117 | Catalyst for purification of diesel engine exhaust gas | Masahito Kida | 1997-03-11 |