Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6492790 | Driving system for driving AC motor | Toshifumi Yoshikawa, Naoto Ohnuma, Takao Kishikawa, Sadao Hokari | 2002-12-10 |
| 6490187 | Semiconductor electric power conversion device | Kazuhisa Mori, Asako Koyanagi, Satoshi Fukuda, Takao Kishikawa, Tomoharu Sakoda | 2002-12-03 |
| 4884182 | Current source power converting apparatus with overvoltage protection | Takeki Ando, Kiyoshi Nakamura, Hiromi Inaba, Toshiaki Kurosawa, Masao Nakazato +1 more | 1989-11-28 |
| 4773508 | Elevator control apparatus | Hideaki Takahashi, Noboru Arabori, Katsu Komuro, Hiromi Inaba | 1988-09-27 |
| 4636932 | dv/dt Protection circuit device for an AC-DC converter apparatus | Toshiaki Kurosawa, Seiya Shima, Takeki Ando, Hiromi Inaba, Hajime Nakashima | 1987-01-13 |