Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5051391 | Catalyst filter and method for manufacturing a catalyst filter for treating a combustion exhaust gas | Yukio Iida, Yuji Kaihara, Joji Tonomura, Kazuo Uoya, Kimitoshi Ose +4 more | 1991-09-24 |
| 4897248 | Method for treating exhaust gas | Mitsuhiro Horaguchi, Yukio Iida, Joji Tonomura | 1990-01-30 |
| 4728503 | Filter medium for treating an exhaust gas | Yukio Iida, Mitsuhiro Horaguchi, Yuji Kaihara | 1988-03-01 |