Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5365733 | Exhaust gas purification system for an internal combustion engine | Shinichi Takeshima, Toshiaki Tanaka | 1994-11-22 |
| 5294421 | Method for catalytically purifying exhaust gas | Hideaki Muraki, Kiyohiko Oishi, Kenji Katoh | 1994-03-15 |