Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5389749 | Elevator system | Sadao Hokari, Kiyoshi Nakamura, Hiromi Inaba, Yoshio Sakai, Hideaki Takahashi +4 more | 1995-02-14 |
| 4884182 | Current source power converting apparatus with overvoltage protection | Takeki Ando, Kiyoshi Nakamura, Toshisuke Mine, Hiromi Inaba, Masao Nakazato +1 more | 1989-11-28 |
| 4870556 | Method and apparatus for controlling power converter | Hiromi Inaba, Seiya Shima, 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, Seiya Shima, Takeki Ando, Nobuo Mitsui | 1989-05-23 |
| 4779709 | Apparatus for controlling AC elevators | Nobuo Mitsui, Yoshio Sakai, Masao Nakazato, Mitsuyuki Honbu, Shigeta Ueda +5 more | 1988-10-25 |
| 4636932 | dv/dt Protection circuit device for an AC-DC converter apparatus | Seiya Shima, Takeki Ando, Hiromi Inaba, Hajime Nakashima, Toshisuke Mine | 1987-01-13 |
| 4629034 | Elevator control apparatus | Hiromi Inaba, Hajime Nakashima, Hisakatsu Kiwaki, Akiteru Ueda, Takeki Ando +1 more | 1986-12-16 |
| 4584636 | AC-to-DC power converter with improved power factor and overvoltage suppression | Takeki Ando, Hiroaki Kuroha, Yoshio Sakai | 1986-04-22 |
| 4553640 | Controller for elevator | Hiromi Inaba, Seiya Shima, Takeki Ando, Yasunori Katayama, Takanobu Hatakeyama +1 more | 1985-11-19 |
| 4361866 | Power converter apparatus | Seiya Shima, Hiroaki Kuroha, Takeki Ando, Hiromi Inaba, Yoshio Sakai | 1982-11-30 |
| 4263988 | Speed control system for a motor | Hiromi Inaba, Seiya Shima, Takeki Ando, Hiroaki Kuroha | 1981-04-28 |
| 4256204 | Safety apparatus for elevator system | Takeki Ando, Seiya Shima, Hiromi Inaba, Hiroaki Kuroha, Hideo Miyao +2 more | 1981-03-17 |