Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6627583 | Engine oil composition | Kiyoshi Inoue, Jinichi Igarashi, Mituaki Ishimaru, Mineo Kagaya | 2003-09-30 |
| 6373958 | Electrical/mechanical/sound converter and apparatus of electrical/mechanical/sound conversion | Mitsutaka Enomoto, Takanori Fukuyama, Mitsukazu Kuze | 2002-04-16 |
| 5744430 | Engine oil composition | Kiyoshi Inoue, Yasuhisa Yamada, Akira Yaguchi | 1998-04-28 |
| 5739088 | Method of lubricating an alcohol-based fuel engine with an engine oil composition | Kiyoshi Inoue, Takashi Mito | 1998-04-14 |
| 5701862 | Method and apparatus for replenishing the lubricating oil of an internal combustion engine | Kiyoshi Inoue | 1997-12-30 |
| 5567342 | Lubricating oil composition for internal combustion engines | Kiyoshi Inoue | 1996-10-22 |
| 5372703 | Lubricating oils | Kouzou Kamiya, Isao Honjo, Toshio Yoshida, Masaru Ushio, Jinichi Igarashi +4 more | 1994-12-13 |
| 5281347 | Lubricating composition for internal combustion engine | Jinichi Igarashi | 1994-01-25 |