Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5051391 | Catalyst filter and method for manufacturing a catalyst filter for treating a combustion exhaust gas | Shigechika Tomisawa, Yukio Iida, Yuji Kaihara, Kazuo Uoya, Kimitoshi Ose +4 more | 1991-09-24 |
| 4897248 | Method for treating exhaust gas | Mitsuhiro Horaguchi, Shigechika Tomisawa, Yukio Iida | 1990-01-30 |