Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021936 | PWM power converter using mixed bipolar and static induction transistors | Jun-ichi Nishizawa, Takashige Tamamushi, Koichi Mitamura, Hiroo Takahashi, Mitsuo Ikehara +2 more | 1991-06-04 |
| 4719551 | Optically controlled power converting apparatus | Junichi Nishizawa, Takashige Tamamushi, Kimio Miura, Koichi Mitamura | 1988-01-12 |