Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12258534 | Viscosity index improver and lubricating oil composition | Nobuhiro Naito, Satoshi Matsumoto, Masahiro Hashimoto, Hiroki Yamashita, Ryota Sato | 2025-03-25 |
| 12168756 | Viscosity index improver composition and lubricating oil composition | Nobuhiro Naito, Hiroki Yamashita, Hiroki Hagihara | 2024-12-17 |
| 10336961 | Viscosity index improver, lubricant composition, and method for manufacturing lubricant composition | Shigekuni Nakada, Ayumu Sakaguchi, Satoshi Matsumoto | 2019-07-02 |