Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8168573 | Lubricating oil composition | Keiichi Moriki, Eiji Nagatomi, Kenji Ueno, Koji Saito, Hiroshi Fujito | 2012-05-01 |
| 8138133 | Gear oil composition | Yasuyoshi Suzuki, Narihiko Yoshimura, Kenji Ueno, Kouji Saitoh, Tatsuji Suganuma | 2012-03-20 |
| 5669844 | Lubrication system for a parallel-axis differential | Akinori Homan, Hirofumi Okuda | 1997-09-23 |