Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5029288 | Method and apparatus for operating a variable speed power generation system | Yuzuru Kubota | 1991-07-02 |
| 5016158 | Parallel multi-inverter system and motor drive system using the same | Takayuki Matsui, Kazuaki Tobari, Yuzuru Kubota, Junichi Takahashi | 1991-05-14 |
| 4960178 | Motor-driven power steering apparatus | Toshimi Abukawa, Kazuo Tahara, Katsuji Marumoto, Toshiyuki Koterazawa, Mitsuyuki Hombu +6 more | 1990-10-02 |
| 4884184 | Control apparatus for cascaded converter circuit | Takayuki Matsui, Mitsugu Matsutake, Junichi Takahashi, Masami Ito | 1989-11-28 |
| 4875539 | Electric power steering control system | Toshimi Abukawa, Kazuo Tahara, Katsuji Murumoto, Toshiyuki Koterazawa, Mitsuyuki Hombu +9 more | 1989-10-24 |
| 4808903 | Vector control system for induction motors | Takayuki Matsui, Takashi Sukegawa, Junichi Takahashi | 1989-02-28 |
| 4792742 | Control apparatus for an inverter with self-adjustment function of control constants | Noboru Fujimoto | 1988-12-20 |
| 4764859 | Method and apparatus for controlling circulating-current type cycloconverter | Takayuki Matsui | 1988-08-16 |
| 4680526 | Method of controlling inverter-driven induction motor | Takayuki Matsui, Noboru Fujimoto, Yuzuru Kubota | 1987-07-14 |
| 4629959 | Method and apparatus for controlling PWM inverter | Hiroshi Nagase | 1986-12-16 |
| 4625272 | Converter control apparatus and method | Yuzuru Kubota | 1986-11-25 |
| 4562397 | Squirrel-cage induction motor | Yukio Kitabayashi, Noriyoshi Takahashi, Masatoshi Watanabe, Hitoshi Ohura | 1985-12-31 |
| 4524310 | Method and apparatus of controlling induction motors | Hiroshi Nagase | 1985-06-18 |
| 4503377 | Variable speed rotary electric machine | Yukio Kitabayashi, Noriyoshi Takahashi, Masatoshi Watanabe, Yoji Tanaka | 1985-03-05 |
| 4503375 | Method for controlling induction motor and apparatus therefor | — | 1985-03-05 |
| 4503376 | Control method for induction motors | — | 1985-03-05 |
| 4486824 | PWM Converter with control circuit responsive to minimum holding current | Yuzuru Kubota, Hiroshi Nagase | 1984-12-04 |
| 4459534 | Method for controlling induction motor and apparatus therefor | Hiroshi Nagase | 1984-07-10 |
| 4344025 | Motor control system | Yuzuru Kubota, Hiroshi Nagase, Katsunori Suzuki | 1982-08-10 |
| 4330741 | Electric control apparatus of induction motor | Hiroshi Nagase, Yuzuru Kubota, Katsunori Suzuki | 1982-05-18 |
| 4328454 | Apparatus for controlling ac motor | Hiroshi Nagase | 1982-05-04 |
| 4295084 | Control apparatus of synchronous motor having thyristor converter | Hiroshi Nagase, Yuzuru Kubota, Katsunori Suzuki | 1981-10-13 |
| 4277735 | Control apparatus for induction motor | Yuzuru Kubota, Hiroshi Nagase | 1981-07-07 |
| 4276504 | Control device for commutatorless motor | Hiroshi Nagase, Yuzuru Kubota | 1981-06-30 |
| 4240020 | Control system for suppressing torque ripple in synchronous motor | Yuzuru Kubota, Hiroshi Nagase, Katsunori Suzuki | 1980-12-16 |