Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8188018 | Lubricating oil composition | Wataru Sawaguchi, Toshio Nitta | 2012-05-29 |
| 7939477 | Lubricant composition for oil-impregnated sintered bearings | Toshio Nitta | 2011-05-10 |