Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6569216 | Abrasive fluid compositions | Shigeo Fujii, Yoshiaki Oshima, Koichi Naito | 2003-05-27 |
| 6336945 | Abrasive composition for the base of magnetic recording medium and process for producing the base by using the same | Yuzo Yamamoto, Manabu Shibata, Toshiya Hagihara | 2002-01-08 |
| 6190574 | Phosphorus-comprising lubricating oil composition | Shoji Nakagawa, Yuichiro Kobayashi, Hiroyasu Togashi, Toshiya Hagihara | 2001-02-20 |
| 6096692 | Synthetic lubricating oil | Toshiya Hagihara, Shoji Nakagawa, Yuichiro Kobayashi, Hiroyasu Togashi, Akimitsu Sakai | 2000-08-01 |