Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6656887 | Lubricating oil compositions | Jinichi Igarashi, Takeo Koizumi | 2003-12-02 |
| 6569819 | Lubricant compositions | Jinichi Igarashi, Osamu Kurosawa | 2003-05-27 |
| 6306801 | Lubricating oil composition comprising acylated bissuccinimide, zinc dithiophosphate and metallic detergent | Yoko Matsuyama, Osamu Kurosawa | 2001-10-23 |
| 5786307 | Lubricating oil composition | Jinich Igarashi, Kiyoshi Azami | 1998-07-28 |