Issued Patents All Time
Showing 1–1 of 1 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, Kiyoo Mitsui +2 more | 1991-06-04 |