Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11387745 | Rectifier and motor control apparatus having power regeneration function | Eijun Murai, Shunpei Tanaka | 2022-07-12 |
| 11171573 | Power conversion apparatus and control method of the same | Koujirou Sakai | 2021-11-09 |
| 11146182 | Rectifier and motor driving device | Takaaki Tagawa | 2021-10-12 |
| 11005409 | Motor drive apparatus including short-circuit judgment unit for DC link capacitor | Akinori Satou | 2021-05-11 |
| 10827638 | Electric device and motor driving device | Yuuya NAKAGAWA | 2020-11-03 |
| 10812009 | Motor driving device and abnormal heat generation detecting method for motor driving device | Takaaki Tagawa | 2020-10-20 |
| 10720872 | Motor control device and machine tool system for controlling motor in accordance with amount of drop in power supply voltage | Shunpei Tanaka, Yuuta SEKIKAWA, Kenta Yamamoto | 2020-07-21 |
| 10709037 | Motor drive device including fan unit | Kazuhiro Yamamoto, Makoto Takeshita | 2020-07-07 |
| 10651758 | Motor drive apparatus including short-circuit judgment unit for capacitor of DC link unit | Yuuya NAKAGAWA | 2020-05-12 |
| 10298141 | Motor drive device | Yuuya NAKAGAWA | 2019-05-21 |
| 9768723 | Motor drive using capacitor | Koujirou Sakai | 2017-09-19 |
| 9071182 | Motor drive device with alarm level setting unit | Tomokazu Yoshida | 2015-06-30 |
| 8803458 | Motor drive apparatus equipped with dynamic braking control unit | Hiroyasu Sato, Minoru Kobayashi | 2014-08-12 |
| 8649130 | Motor driving apparatus having fault diagnostic function | Takashi Harada, Masatomo Shirouzu, Yasusuke Iwashita | 2014-02-11 |
| 8624538 | Motor driving apparatus having function of dynamically switching converter operation mode of AC/DC converter | Tomokazu Yoshida, Takashi Harada, Yasusuke Iwashita | 2014-01-07 |
| 8415906 | Motor driving apparatus | Yasusuke Iwashita, Masakazu Niwa, Takashi Harada, Koujirou Sakai | 2013-04-09 |
| 8410744 | Motor driving apparatus | Yasusuke Iwashita, Takashi Harada, Masakazu Niwa, Koujirou Sakai | 2013-04-02 |
| 8384335 | Motor driving apparatus having DC link voltage regulating function | Wataru Kuroki, Takashi Harada, Yasusuke Iwashita | 2013-02-26 |
| 8350713 | Numerical controller having a function for determining machine abnormality from signals obtained from a plurality of sensors | Shunsuke Matsubara, Yasusuke Iwashita, Akira Hirai, Hiroyasu Sato | 2013-01-08 |
| 8283880 | Motor drive device with function of switching to power regenerative operation mode | Yasusuke Iwashita, Takashi Harada, Shinichi Mizukami | 2012-10-09 |
| 7898196 | Motor driving apparatus for driving and braking brake-equipped motor | Naoyuki Suzuki, Tsutomu Shikagawa | 2011-03-01 |
| 7898264 | Motor insulation deterioration detection device | Hiroyasu Sato, Akira Hirai | 2011-03-01 |
| 7398667 | Die cushion drive system | Shunsuke Matsubara, Takashi Okamoto, Yuuichi Yamada | 2008-07-15 |
| 7256701 | Motor driver | Shinichi Kono, Masami Kimijima, Mamoru Yaeshima | 2007-08-14 |
| 7253639 | Insulation resistance deterioration detection method and insulation resistance deterioration detection device for motor, and motor driver | Mamoru Yaeshima, Hiroyasu Sato | 2007-08-07 |