Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4680526 | Method of controlling inverter-driven induction motor | Toshiaki Okuyama, Takayuki Matsui, Noboru Fujimoto | 1987-07-14 |
| 4625272 | Converter control apparatus and method | Toshiaki Okuyama | 1986-11-25 |
| 4486824 | PWM Converter with control circuit responsive to minimum holding current | Toshiaki Okuyama, Hiroshi Nagase | 1984-12-04 |
| 4344025 | Motor control system | Toshiaki Okuyama, Hiroshi Nagase, Katsunori Suzuki | 1982-08-10 |
| 4330741 | Electric control apparatus of induction motor | Hiroshi Nagase, Toshiaki Okuyama, Katsunori Suzuki | 1982-05-18 |
| 4295084 | Control apparatus of synchronous motor having thyristor converter | Hiroshi Nagase, Toshiaki Okuyama, Katsunori Suzuki | 1981-10-13 |
| 4277735 | Control apparatus for induction motor | Toshiaki Okuyama, Hiroshi Nagase | 1981-07-07 |
| 4276504 | Control device for commutatorless motor | Hiroshi Nagase, Toshiaki Okuyama | 1981-06-30 |
| 4240020 | Control system for suppressing torque ripple in synchronous motor | Toshiaki Okuyama, Hiroshi Nagase, Katsunori Suzuki | 1980-12-16 |
| 4206395 | Harmonic eliminating apparatus | Toshiaki Okuyama, Hiroshi Nagase, Takamasa Hori | 1980-06-03 |