Issued Patents 2019
Showing 1–2 of 2 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 |