Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6134126 | Power conversion system | Katsumi Fukasawa, Dai Karasawa | 2000-10-17 |
| 4583158 | High voltage thyristor valve | Toshiaki Matsumoto | 1986-04-15 |
| 4494173 | Three-dimensional insulating structure for high voltage components | Yasuo Karasawa | 1985-01-15 |