Issued Patents 2025
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12410379 | Lubricant oil composition | Kenji SUNAHARA, Shoichiro FUJITA, Masaya Kubota | 2025-09-09 |
| 12275910 | Lubricating oil composition | Akio Kojima, Yukio Yoshida, Kenichi Ogata, Keiichi Narita | 2025-04-15 |
| 12195691 | Lubricating oil additive composition and lubricating oil composition | Yukio Yoshida, Hideto Kamimura | 2025-01-14 |