Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372703 | Lubricating oils | Kouzou Kamiya, Isao Honjo, Masaru Ushio, Jinichi Igarashi, Masakuni Hirata +4 more | 1994-12-13 |
| 5342532 | Lubricating oil composition comprising alkylnaphthalene and benzothiophene | Mitsuhiko Takei, Yoshiaki Nagai, Koji Masamizu | 1994-08-30 |