Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5780399 | Oil-soluble polyester, additive for lubricating oil, and lubricating oil composition | Yoshihide Ishikawa, Michio Miyamoto, Shizuo Kitahara, Yutaka Shikatani, Jinichi Igarashi | 1998-07-14 |
| 5723417 | Oil-soluble polyester, additive for lubricating oil, and lubricating oil composition | Shizuo Kitahara, Yutaka Shikatani, Junichi Igarashi, Yoshihide Ishikawa, Michio Miyamoto | 1998-03-03 |