Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696063 | Basic metal salt of dithiocarbamic acid and lubricating oil composition containing said salt | Michihide Tokashiki, Katsuya Arai | 1997-12-09 |
| 5688748 | Lubricating oil composition for internal combustion engines | — | 1997-11-18 |
| 5605880 | Lubricating oil composition | Katsuya Arai | 1997-02-25 |
| 5603861 | Electroviscous fluid mixed with esterified silica fine particles and polyhydric alcohol | Nobuharu Umamori, Tetsuo Miyamoto, Makoto Kanbara | 1997-02-18 |