Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4992150 | Process for preparing oil-soluble nitrogen-containing compounds | Jinichi Igarashi | 1991-02-12 |
| 4737297 | Synthetic lubricating oils | Toshio Yoshida | 1988-04-12 |
| 4714794 | Synthetic oils | Toshio Yoshida | 1987-12-22 |
| 4665275 | Thermal medium oils | Toshio Yoshida | 1987-05-12 |
| 4392968 | Metal deactivator and composition containing same | Noboru Ishida | 1983-07-12 |