Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813272 | Semiconductor pressure sensor | Ryoichi Kobayashi | 1989-03-21 |
| 4802952 | Method for manufacturing semiconductor absolute pressure sensor units | Shigeyuki Kobori, Kazuji Yamada, Ryoichi Kobayashi, Seikou Suzuki | 1989-02-07 |