Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672570 | Lubricating oil composition for diesel engine and method for lubrication of diesel engine using same | Tomomi Miyaji, Masahisa Goto | 1997-09-30 |
| 5525247 | Low ash lubricating oil composition for diesel engine and method for lubrication of diesel engine using same | Tomomi Miyaji, Masahisa Goto | 1996-06-11 |