Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9255958 | Ground fault detection circuit | Tomoaki Tanabe | 2016-02-09 |
| 7723871 | Heating power supply apparatus | Takayoshi Hashizume | 2010-05-25 |
| 5960027 | Apparatus for controlling arc deflection in an arc furnace | Takayuki Asoh, Yuji Haraguchi, Kazuya Toi | 1999-09-28 |
| 4677454 | Thyristor with self-centering housing means | — | 1987-06-30 |
| 4500164 | Light triggered thyristor, including a light guide, whose parameters are related by an equation | — | 1985-02-19 |