Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11118128 | Engine oil composition | Shinji Iino | 2021-09-14 |
| 10920167 | Lubricant composition and lubricating oil composition | Eiji Katsuno | 2021-02-16 |
| 10913917 | Internal combustion engine lubricating oil composition | Shinji Iino | 2021-02-09 |