Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6656887 | Lubricating oil compositions | Kazuhiro Yagishita, Jinichi Igarashi | 2003-12-02 |
| 5090232 | Method and apparatus for detecting odors | Yasusuke Wakabayashi, Katuo Ehara, Masataka Hara, Masahiro Ehara | 1992-02-25 |
| 4770027 | Method of measuring concentrations of odors and a device therefor | Katuo Ehara, Yasusuke Wakabayashi | 1988-09-13 |
| 4371440 | Method of treating a waste water rich in protein | Kiyoshi Yoshizawa, Kenichi Otsuka, Kikuo Nojiro, Katsuyoshi Mitsutomi, Seiji Nakamura | 1983-02-01 |