Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11801492 | Exhaust gas purification catalyst | Isao Chinzei, Takahiro NISHIO, Takumi Tojo | 2023-10-31 |
| 11759769 | Exhaust gas purification device | Isao Chinzei, Seiji Nakahigashi, Takumi Tojo, Masahide Miura, Nobuyuki Takagi +4 more | 2023-09-19 |
| 9784155 | Exhaust purification system for internal combustion engine | Kohei Yoshida | 2017-10-10 |