Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11680221 | Lubricating oil composition for internal combustion engine | Koji Hoshino | 2023-06-20 |
| 11649413 | Lubricating oil composition for internal combustion engine | Koji Hoshino | 2023-05-16 |
| 11168281 | Lubricating oil composition for internal combustion engine | Koji Hoshino | 2021-11-09 |
| 9783757 | Poly(meth)acrylate-based viscosity index improver, lubricant additive and lubricant composition containing viscosity index improver | Shigeki Matsui, Hiroya Miyamoto, Kazuo Tagawa, Akira Takagi, Ryuichi Ueno | 2017-10-10 |
| 7833422 | Process of treating selenium-containing liquid | Hiroyuki AKIHO, Shigeo Ito | 2010-11-16 |