Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8691739 | Lubricating oil composition | Yasuharu Yokoyama, Miyoshi Marumo | 2014-04-08 |
| 7148186 | Lubricant oil composition for diesel engines (LAW964) | Toshiaki Kuribayashi, Nobuchika Kawagoishi | 2006-12-12 |
| 6750185 | Lubricating oil composition for internal combustion engines | Sonmin Ryu, Shuzo Nemoto | 2004-06-15 |
| 6638897 | Lubricant oil composition for internal combustion engines (law859) | Nobuchika Kawagoishi, Makota Yoneda, Toshiaki Kuribayashi | 2003-10-28 |
| 6329328 | Lubricant oil composition for internal combustion engines | Katsuya Koganei, Toshiaki Kuribayashi | 2001-12-11 |
| 6207625 | Lubricant oil composition for diesel engines (LAW913) | Toshiaki Kuribayashi | 2001-03-27 |
| 5804096 | Refrigerating machine oil | Takehisa Sato, Toshiaki Kuribayashi | 1998-09-08 |
| 5185092 | Lubricating oil for refrigerator | Masaaki Fukuda, Hirotaka Tomizawa, Mitsuo Ohta, Hideki Osaka, Takehisa Satoh +2 more | 1993-02-09 |