Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5834911 | Brushless DC motor capable of being started stably | — | 1998-11-10 |
| 5804939 | Brushless D.C. motor driving and controlling method and apparatus therefor and electrical equipment | Hiroyuki Yamai, Kazunobu Ooyama | 1998-09-08 |
| 5739650 | Motor system capable of obtaining high efficiency and method for controlling a motor | Kiyotaka Nishijima, Hiroyuki Yamai, Akio Yamagiwa, Kazunobu Ooyama, Nobuki Kitano | 1998-04-14 |
| 5055118 | Dust-collecting electrode unit | Hitoshi Nagoshi, Kazushige Takashima | 1991-10-08 |