Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10376839 | Exhaust gas purification catalyst for lean burn engine | Takahiro Umeno, Yoshiyuki Hayashi | 2019-08-13 |
| 10226755 | NOx storage reduction catalyst for purifying exhaust gas and exhaust gas purification method using said catalyst | Takahiro Umeno, Yoshiyuki Hayashi | 2019-03-12 |
| 9861961 | Catalyst for nitrogen oxide removal | Takahiro Umeno, Yoshiyuki Hayashi | 2018-01-09 |