Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11274262 | Lubricating oil composition and use method therefor | Kenji SUNAHARA, Kosuke Fujimoto | 2022-03-15 |
| 11193080 | Lubricating oil composition | Kenji SUNAHARA, Toyoharu Kaneko | 2021-12-07 |
| 7704928 | Lubricating oil composition for manual transmission | Osamu Kurosawa, Masato Takahashi, Toru Matsuoka, Koji Saito, Tetuzo Yoneda +2 more | 2010-04-27 |