Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D407043 | Supporting apparatus | Katsuji Kojima, Masaaki Harada | 1999-03-23 |
| 5194078 | Exhaust filter element and exhaust gas-treating apparatus | Masaaki Yonemura | 1993-03-16 |
| 4840028 | Purifier of diesel particulates in exhaust gas | Masaaki Yonemura, Hisanori Shimoda, Masuo Takigawa, Toshihiro Mihara | 1989-06-20 |
| 4718926 | Exhaust gas filter for diesel engine | Mitsuyoshi Nakamoto, Masaaki Yonemura, Koichi Shinmura | 1988-01-12 |
| 4652286 | Exhaust gas filter | Toshihiro Mihara, Masaaki Yonemura, Satoshi Kuwano | 1987-03-24 |
| 4504218 | Ceramic burner plate | Toshihiro Mihara, Koichi Noma, Hiromitsu Taki | 1985-03-12 |