Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870556 | Method and apparatus for controlling power converter | Hiromi Inaba, Toshiaki Kurosawa, Toshimitsu Tobita, Mitsuyuki Hombu, Nobuo Mitsui | 1989-09-26 |
| 4833586 | PWM control for power converter system utilizing pulse dropping at minimum pulse widths | Hiromi Inaba, Takeki Ando, Toshiaki Kurosawa, Nobuo Mitsui | 1989-05-23 |
| 4829416 | Apparatus for controlling power transducers of the pulse width modulation (PWM) control type | Hiromi Inaba, Sadao Hokari, Toshimitsu Tobita, Hideaki Takahashi, Shigeta Ueda | 1989-05-09 |
| 4780660 | Apparatus for compensating reactive power by current-source type converter | Hiromi Inabe, Sadao Hokari | 1988-10-25 |
| 4779709 | Apparatus for controlling AC elevators | Nobuo Mitsui, Yoshio Sakai, Masao Nakazato, Mitsuyuki Honbu, Shigeta Ueda +5 more | 1988-10-25 |
| 4672520 | Current-source power converting apparatus with self-extinction devices | Shigeta Ueda, Mitsuyuki Hombu, Kazuo Honda, Akiteru Ueda, Katsunori Suzuki | 1987-06-09 |
| 4636932 | dv/dt Protection circuit device for an AC-DC converter apparatus | Toshiaki Kurosawa, Takeki Ando, Hiromi Inaba, Hajime Nakashima, Toshisuke Mine | 1987-01-13 |
| 4553640 | Controller for elevator | Hiromi Inaba, Takeki Ando, Toshiaki Kurosawa, Yasunori Katayama, Takanobu Hatakeyama +1 more | 1985-11-19 |
| 4499986 | Control apparatus for passenger conveyor | Nobuyoshi Tsuboi, Morio Kanasaki, Hayashi Nakazawa | 1985-02-19 |
| 4441584 | AC Elevator control system | Nobuo Mitsui, Yasuyuki Maeda, Tomiaki Kurihara, Takanobu Hatakeyama, Katsu Komuro | 1984-04-10 |
| 4387436 | Method and apparatus for detecting elevator car position | Yasunori Katayama, Takanobu Hatakeyama, Sadao Hokari, Toshiro Narita, Kenji Yoneda +3 more | 1983-06-07 |
| 4361866 | Power converter apparatus | Hiroaki Kuroha, Takeki Ando, Toshiaki Kurosawa, Hiromi Inaba, Yoshio Sakai | 1982-11-30 |
| 4263988 | Speed control system for a motor | Hiromi Inaba, Takeki Ando, Toshiaki Kurosawa, Hiroaki Kuroha | 1981-04-28 |
| 4256204 | Safety apparatus for elevator system | Takeki Ando, Toshiaki Kurosawa, Hiromi Inaba, Hiroaki Kuroha, Hideo Miyao +2 more | 1981-03-17 |
| 4245293 | Power converter system | Mutsuhiro Terunuma, Kunio Saito | 1981-01-13 |