Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888211 | Process for preparation of vertical magnetic recording medium | Tetsuo Oka, Takayoshi Akamatsu, Satoshi Horiuchi | 1989-12-19 |
| 4884052 | Contact structure for slider position sensor | Kenji Eitoku, Mamoru Tateishi | 1989-11-28 |
| 4867476 | Shock absorber unit | Toshihiko Yamanaka | 1989-09-19 |
| 4858136 | Method of and apparatus for controlling fuel injection quantity for internal combustion engine | Yoshiyuki Tanaka, Akira Ii, Taiichi Meguro | 1989-08-15 |
| 4851164 | Method of manufacturing focal plates | — | 1989-07-25 |
| 4830357 | Sorting machine | Chikado Goto, Toshio Sakuuchi | 1989-05-16 |