Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6492790 | Driving system for driving AC motor | Toshifumi Yoshikawa, Naoto Ohnuma, Toshisuke Mine, Takao Kishikawa | 2002-12-10 |
| 6481531 | Elevator communications apparatus | Hirokazu Nagura, Hiromi Inaba, Atsuya Fujino | 2002-11-19 |
| 6408986 | Charger for elevator call devices | Hideki Ayano, Hiromi Inaba, Atsuya Fujino | 2002-06-25 |
| 5389749 | Elevator system | Kiyoshi Nakamura, Hiromi Inaba, Yoshio Sakai, Hideaki Takahashi, Seikichi Masuda +4 more | 1995-02-14 |
| 5155671 | Power converter with current-type inverter | Hiromi Inaba, Kiyoshi Nakamura, Yoshio Sakai, Naoyuki Outi, Takeki Ando +1 more | 1992-10-13 |
| 4924373 | Apparatus and method for controlling switching elements in a PWN-controlled voltage source inverter | Hiromi Inaba, Kiyoshi Nakamura, Akira Kimura, Naoyuki Oouchi | 1990-05-08 |
| 4829416 | Apparatus for controlling power transducers of the pulse width modulation (PWM) control type | Hiromi Inaba, Seiya Shima, Toshimitsu Tobita, Hideaki Takahashi, Shigeta Ueda | 1989-05-09 |
| 4787021 | Current-type converter apparatus | Kiyoshi Nakamura, Katsu Komuro, Takeki Ando, Hiromi Inaba, Shigeta Ueda | 1988-11-22 |
| 4780660 | Apparatus for compensating reactive power by current-source type converter | Seiya Shima, Hiromi Inabe | 1988-10-25 |
| 4661757 | Controller for AC elevator | Takamasa Hori, Katsu Komuro, Takanobu Hatakeyama, Toshiroo Narita, Yasunori Katayama +1 more | 1987-04-28 |
| 4553640 | Controller for elevator | Hiromi Inaba, Seiya Shima, Takeki Ando, Toshiaki Kurosawa, Yasunori Katayama +1 more | 1985-11-19 |
| 4387436 | Method and apparatus for detecting elevator car position | Yasunori Katayama, Takanobu Hatakeyama, Seiya Shima, Toshiro Narita, Kenji Yoneda +3 more | 1983-06-07 |
| 4378059 | Abnormal elevator speed detector | Takanobu Hatakeyama, Yasunori Katayama, Kanji Yoneda, Tomiaki Kurihara, Toshio Meguro | 1983-03-29 |
| 4319665 | AC Elevator control system | Katsu Komuro, Yasuyuki Maeda | 1982-03-16 |