Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872257 | Apparatus for installing bearings on engine components | Takehisa Wakamori, Ryoji Ito, Chikafumi Shimanaka | 1989-10-10 |
| 4863617 | Process and apparatus for separating solid-liquid compositions | Yoshihisa Katoh, Yukihiko Nagao, Mitsumasa Hasegawa | 1989-09-05 |
| 4839488 | Electric discharge machine using a ceramic filter to filter the working fluid | Yoshihisa Katoh, Mitsumasa Hasegawa | 1989-06-13 |
| 4806845 | System for measuring and generating electric noise | Jiro Nakano | 1989-02-21 |