Issued Patents All Time
Showing 1–25 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5334924 | Induction motor control system | Hiroshi Ishida | 1994-08-02 |
| 5281903 | Method for drivingly controlling a variable reluctance type motor | Hideaki Oku, Yo Ikebe, Hidetsugu Komiya, Takeshi Nakamura | 1994-01-25 |
| 4796352 | AC servomotor and a method of manufacturing the same | Yoichi Amemiya, Masatoyo Sogabe, Noboru Iwamatsu | 1989-01-10 |
| 4748360 | Rotor for a synchronous motor | Yoichi Amemiya, Masatoyo Sogabe, Noboru Iwamatsu | 1988-05-31 |
| 4714852 | Permanent-magnet field synchronous motor | Yoichi Amemiya, Masatoyo Sogabe, Kazushi Kumagai | 1987-12-22 |
| 4700097 | Synchronous machine | Yoichi Amemiya, Masatoyo Sogabe, Noboru Iwamatsu | 1987-10-13 |
| 4663550 | Shaft for an electric motor with DC brake | Yoichi Amemiya, Masatoyo Sogabe, Katsuya Sugahara | 1987-05-05 |
| 4661736 | Rotor for a synchronous motor | Yoichi Amemiya, Masatoyo Sogabe, Noboru Iwamatsu | 1987-04-28 |
| 4631807 | Method of manufacturing a permanent-magnet field rotor | Yoichi Amemiya, Masatoyo Sogabe, Noboru Iwamatsu | 1986-12-30 |
| 4626725 | Synchronous rotary machine | Yoichi Amemiya, Masatoyo Sogabe, Noboru Iwamatsu | 1986-12-02 |
| 4614020 | Mechanism and method for automatically changing tools | Yoshiki Fujioka | 1986-09-30 |
| 4543506 | Permanant magnet field type rotor structure for an electric machine | Yoichi Amemiya, Masatoyo Sogabe | 1985-09-24 |
| 4538084 | Stator of motor | Yoichi Amemiya, Masatoyo Sogabe, Noboru Iwamatsu | 1985-08-27 |
| 4518916 | System for detecting rotational speed | Hiroshi Ishida | 1985-05-21 |
| 4485320 | Welded stator using non-magnetic bars in specially shaped lamination slots | Shigeaki Oyama, Kousei Nakamura, Jiro Nakano | 1984-11-27 |
| 4482854 | Inverter circuit | Hiroshi Ishida, Shinichi Kouno | 1984-11-13 |
| 4471285 | System for variable speed operation of induction motors | Hiroshi Ishida | 1984-09-11 |
| 4456868 | Method and apparatus for controlling AC motors | Sakae Yamamura | 1984-06-26 |
| 4426610 | Induction motor control system | Katsuo Kobari | 1984-01-17 |
| 4406959 | Rotary electric motor | Keiichi Harano, Shigeaki Oyama | 1983-09-27 |
| 4370614 | Speed and direction detector | Hiroshi Ishida | 1983-01-25 |
| 4361794 | Induction motor drive apparatus | Hiroshi Ishida | 1982-11-30 |
| 4353023 | Operation control apparatus for AC motors | Hiroshi Ishida | 1982-10-05 |
| 4333042 | System for driving a motor by a pulse width modulation inverter | Hiroshi Ishida | 1982-06-01 |
| 4330832 | Cutter feed rate control system | Yoshinori Kohzai, Yoshiki Fujioka | 1982-05-18 |