Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11008528 | Viscosity index improver and lubricating oil composition | Hiroki Hagihara, Hiroki Hashimoto | 2021-05-18 |
| 10336961 | Viscosity index improver, lubricant composition, and method for manufacturing lubricant composition | Shigekuni Nakada, Satoshi Matsumoto, Kenyuu Yoshida | 2019-07-02 |
| 9683195 | Viscosity index improver and lubricating oil composition | Shigekuni Nakada, Takenori Tatsumi, Hiroki Yamashita | 2017-06-20 |