Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878163 | Pulse width modulated inverter with high-to-low frequency output converter | Norikazu Tokunaga, Yasuo Matsuda, Hisao Amano | 1989-10-31 |
| 4855887 | Current and frequency converter having means to reduce switching losses | Norikazu Tokunaga, Yasuo Matsuda, Hisao Amano | 1989-08-08 |