Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876893 | Strain gauges for the pressure sensor | Yukihiro Kato, Masami Ishii, Tetsuo Oka | 1989-10-31 |
| 4864273 | Variable resistor | Takoyoshi Tsuzuki, Mitsuko Kotaki, Masami Ishii | 1989-09-05 |
| 4821011 | Pressure sensor | Mitsuko Kotaki, Masami Ishii | 1989-04-11 |