Issued Patents All Time
Showing 101–117 of 117 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4651067 | Apparatus for driving brushless motor | Takayasu Ito, Isao Fukushima, Yoshio Fujimori, Yasunori Kobori | 1987-03-17 |
| 4613914 | Auto-tracking method and apparatus of a magnetic recording/reproducing apparatus | Yasunori Kobori, Kaneyuki Okamoto, Isao Fukushima, Katsuhiko Goto, Takashi Takahashi | 1986-09-23 |
| 4605901 | Frequency-voltage converter | Yasunori Kobori, Isao Fukushima, Yoshinori Masuda, Norihisa Yamamoto | 1986-08-12 |
| 4590438 | Bipolar transistor circuit with FET constant current source | Isao Fukushima, Yasunori Kobori | 1986-05-20 |
| 4543516 | Speed and phase control system | Yasunori Kobori, Kaneyuki Okamoto, Isao Fukushima, Masataka Sekiya, Kenji Kano +1 more | 1985-09-24 |
| 4521750 | Characteristic switching circuit | Isao Fukushima, Kazuyoshi Kuwahara, Keiichi Itoigawa, Yasunori Kobori | 1985-06-04 |
| 4518901 | Motor control apparatus | Isao Fukushima, Yasunori Kobori, Yoshinori Masuda | 1985-05-21 |
| 4503369 | Power supply for plural brushless DC motors | Isao Fukushima, Tsunehiko Teshima, Yasunori Kobori, Takayasu Ito | 1985-03-05 |
| 4494056 | Motor driving circuit | Katsumi Sera, Isao Fukushima, Yasunori Kobori | 1985-01-15 |
| 4482926 | Method and apparatus for magnetic recording and reproducing | Isao Fukushima, Masao Hibi | 1984-11-13 |
| 4460953 | Signal voltage dividing circuit | Isao Fukushima, Kazuyoshi Kuwahara, Yasunori Kobori, Keiichi Itoigawa | 1984-07-17 |
| 4358797 | Electronic editing control apparatus for a video tape recorder | Isao Fukushima, Hajime Yokota | 1982-11-09 |
| 4338554 | Automatic gain control apparatus for a motor servo system | Isao Fukushima, Kenji Satoh, Tunehiko Teshima | 1982-07-06 |
| 4307326 | Drive system for a motor | Isao Fukushima, Yoshinori Okada | 1981-12-22 |
| 4256975 | Limiter circuit for removing nose from demodulated signals | Isao Fukushima, Hiroyuki Kimura | 1981-03-17 |
| 4198602 | Limiter circuit for limiting pulsive noises | Isao Fukushima, Hiroyuki Kimura | 1980-04-15 |
| 4197505 | Limiter circuit | Isao Fukushima, Hiroyuki Kimura | 1980-04-08 |