Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6303546 | Traction drive fluid | Hitoshi Hata, Nobuo Goto, Yoshie Arakawa, Yasuhiro Murakami | 2001-10-16 |
| 5965495 | Lubricating oil composition for internal combustion engines | Masahisa Goto | 1999-10-12 |
| 5672570 | Lubricating oil composition for diesel engine and method for lubrication of diesel engine using same | Masahisa Goto, Keiich Narita | 1997-09-30 |
| 5525247 | Low ash lubricating oil composition for diesel engine and method for lubrication of diesel engine using same | Masahisa Goto, Keiich Narita | 1996-06-11 |
| 5308524 | Lubricating oil composition for 2 cycle or rotary engine | Takeshi Matsuoka | 1994-05-03 |
| 5049291 | Lubricating oil composition for two-cycle engines | Masahiko Kido | 1991-09-17 |