Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331809 | Exhaust gas purification system for an internal combustion engine | Sinichi Takeshima, Sinya Hirota | 1994-07-26 |
| 5313792 | Exhaust gas purification apparatus for an internal combustion engine | Satoshi Iguchi, Tetsuro Kihara | 1994-05-24 |
| 5294421 | Method for catalytically purifying exhaust gas | Hideaki Muraki, Tokuta Inoue, Kiyohiko Oishi | 1994-03-15 |