Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7342799 | System using power converter, microsurge suppressor and microsurge suppression method | — | 2008-03-11 |
| 7042198 | System using a power converter | — | 2006-05-09 |
| 6999330 | Power converter and system using the same | — | 2006-02-14 |
| 5677604 | Control system and control method for electric automobile | Ryoso Masaki, Satoru Kaneko, Sanshiro Obara | 1997-10-14 |
| 5650700 | Electric vehicle torque controller | Taizou Miyazaki, Ryoso Masaki, Tsutomu Ohmae, Sanshiro Obara | 1997-07-22 |
| 5583406 | Control method and system for regeneration braking of an electric vehicle | Satoru Kaneko, Ryoso Masaki, Tsutomu Ohmae | 1996-12-10 |
| 5557181 | Brake control apparatus for electric motor vehicle | Shotaro Naito, Sanshiro Obara | 1996-09-17 |
| 5549172 | Electric vehicle drive system and drive method | Ryoso Masaki, Taizou Miyazaki, Fumio Tajima, Tsutomu Ohmae | 1996-08-27 |
| 5534764 | Vehicle driving control system having function for suppressing vibration | Ryoso Masaki, Sanshiro Obara | 1996-07-09 |
| 5532571 | Control apparatus for induction motor | Ryoso Masaki | 1996-07-02 |
| 5481168 | Electric vehicle torque controller | Taizou Miyazaki, Ryoso Masaki, Tsutomu Ohmae, Sanshiro Obara | 1996-01-02 |
| 5453972 | Optical disk apparatus | Hiroshi Kanazawa, Fumio Tajima, Ryoichi Naganuma, Tadashi Takahashi, Hideki Nihei +3 more | 1995-09-26 |
| 5432644 | Disk drive unit having motor components in a compact arrangement | Fumio Tajima, Hiroshi Kanazawa, Hiroshi Katayama, Kazuo Ohnishi, Tadashi Takahashi +3 more | 1995-07-11 |
| 5414339 | Electric vehicle control system | Ryoso Masaki, Tsutomu Ohmae, Toshiaki Okuyama | 1995-05-09 |
| 5357181 | Failure detection method for electric vehicles and fail-safe control method using this method | Ryoso Masaki, Tsutomu Omae, Sanshiro Obara, Shotaro Naito | 1994-10-18 |
| 5298841 | Apparatus for controlling the speed of a moving object | Hiroshi Katayama, Fumio Tajima, Taizo Miyazaki, Shigeki Morinaga, Seiichi Narushima +4 more | 1994-03-29 |
| 5245232 | Linear actuator | Hideki Nihei, Syooichi Kawamata, Hideaki Horie, Shigeki Morinaga | 1993-09-14 |
| 5210479 | Drive circuit for an insulated gate transistor having overcurrent detecting and adjusting circuits | Shin Kimura, Norikazu Tokunaga, Satoshi Ibori, Shuuji Musha, Yasuo Matsuda +1 more | 1993-05-11 |
| 5184057 | Control method and device for AC motor | Keijiro Sakai, Tunehiro Endo, Yuzuru Kubota, Takashi Ikimi, Mitsuyuki Honbu | 1993-02-02 |
| 5175479 | Moving body position control apparatus and signal reproducing apparatus | Fumio Tajima, Hiroshi Katayama, Taizou Miyazaki, Shigeki Morinaga, Seiichi Narushima | 1992-12-29 |
| 5053690 | Control method of pulse width modulation inverter and pulse width modulation inverter system | Keijiro Sakai, Hiroshi Fujii, Kenji Nantoh | 1991-10-01 |
| 5023538 | PWM inverter apparatus for controlling rotating magnetic flux in a.c. motors | Keijiro Sakai, Akiteru Ueda, Hiroshi Fujii | 1991-06-11 |
| 5019773 | Method and apparatus for detecting positions and/or speed of a moving body using two phase signals | Yasuyuki Sugiura, Rika Oue, Kunio Miyashita, Hiroshi Nagase, Sumio Kobayashi +1 more | 1991-05-28 |
| 4965504 | Control apparatus for inverter for driving AC motor | Shigeta Ueda, Kazuo Honda, Takashi Ikimi, Toshihiko Matsuda, Hiroshi Nagase | 1990-10-23 |
| 4779183 | Method and apparatus for selectively controlling an operation mode of a PWM inverter between an asychronous mode and a synchronous mode modulation | Akiteru Ueda, Hideyuki Shimonabe, Satoshi Ibori, Motonobu Hattori, Kenji Nandoh +1 more | 1988-10-18 |