Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881118 | Semiconductor device | Tsutomu Nakagawa, Futoshi Tokunoh, Shigekazu Yoshida | 1989-11-14 |
| 4797727 | Thyristor with aligned trigger guide | — | 1989-01-10 |
KN
Kazuhiko Niwayama
Overall (1989): #22,828 of 140,708Top 20%
2
Patents 1989