Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5493857 | Exhaust gas-purifying system for internal combustion engines | Hiroaki Kato, Yuichi Shimasaki, Akihisa Saito, Toshikazu Oketani, Takuya Aoki | 1996-02-27 |
| 5467594 | Exhaust gas-purifying system for internal combustion engines | Takuya Aoki, Yuichi Shimasaki, Seiji Matsumoto, Seiji Hatcho, Toshikazu Oketani +3 more | 1995-11-21 |