Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10644526 | Charger with inverter and inverter gate drive circuit | Osamu TAKEI | 2020-05-05 |
| 10479219 | Controller for AC electric motor | — | 2019-11-19 |
| 10333446 | Controller for induction motor | — | 2019-06-25 |
| 10252626 | Charger | Osamu TAKEI | 2019-04-09 |
| 10006455 | Drive control apparatus | Hiroji Nishida | 2018-06-26 |
| 9593720 | Motor | Yoshiyasu Inoue, Nobuhiro Matsumoto, Masanori Ozaki, Masaru Irie, Taei Sugiura | 2017-03-14 |
| 8658285 | Optically clear UV and hydrolysis resistant polyester film | Carlos Hinton, Nao Yokota, Roberto SIU | 2014-02-25 |
| 8222851 | Machine control device | Takayuki Kaneko | 2012-07-17 |
| 7781996 | Speed control device for electric motor | — | 2010-08-24 |
| 7501787 | Method for controlling AC motor | Yasuaki Hachisu | 2009-03-10 |
| 7300335 | Glass substrate for data recording medium, manufacturing method thereof and polishing pad used in the method | Tamaki Horisaka | 2007-11-27 |
| 7059951 | Polishing pad, method of manufacturing glass substrate for use in data recording medium using the pad, and glass substrate for use in data recording medium obtained by using the method | Hiromi Nakano | 2006-06-13 |
| 6932677 | Polishing pad, method of manufacturing glass substrate for use in data recording medium using the pad, and glass substrate for use in data recording medium obtained by using the method | Hiromi Nakano | 2005-08-23 |
| 6852003 | Method of manufacturing glass substrate for data recording medium | Tamaki Horisaka | 2005-02-08 |
| 6404162 | Variable-speed controlling device for use with an induction motor | Shinichi Ishii, Hidetoshi Umida | 2002-06-11 |
| 6377018 | Speed sensorless vector control apparatus | Hidetoshi Umida | 2002-04-23 |
| 6321606 | Apparatus for calculating torque generated by induction motor | Shinichi Ishii | 2001-11-27 |
| 6075337 | Speed control apparatus for induction motor | Shinichi Ishii | 2000-06-13 |
| 5959429 | Variable speed controlling device for induction motor | Hidetoshi Umida, Takashi Aihara | 1999-09-28 |
| 5880572 | Variable-speed control method and apparatus for AC motor | Hidetoshi Umida, Hiroshi Tetsutani | 1999-03-09 |
| 5859521 | Variable speed controller for an AC motor | Hidetoshi Umida, Hiroshi Tetsutani | 1999-01-12 |
| 5828199 | Variable speed controller for an induction motor | Hidetoshi Umida, Hiroshi Tetsutani | 1998-10-27 |
| 5734251 | Control apparatus for AC motor | Hidetoshi Umida, Hiroshi Tetsutani | 1998-03-31 |
| 5623190 | Method and apparatus for controlling an AC motor and detecting malfunctions | Hidetoshi Umida | 1997-04-22 |
| 5532570 | Variable speed control apparatus for induction motor | Hidetoshi Umida | 1996-07-02 |