Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857821 | Reactive power compensation system | — | 1989-08-15 |
| 4835411 | Active filter unit | — | 1989-05-30 |
| 4812669 | Harmonic suppressing device | Kazuo Ikeda, Yoshiharu Tominaga, Kenji Mori | 1989-03-14 |