Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4916368 | Controlling method and device for permanent magnet synchronous motor | Takato Yamakoshi | 1990-04-10 |
| 4690251 | Emergency control system for elevators | Hiroshi Goko | 1987-09-01 |
| 4649751 | Supervisory operation control system for protecting elevators or the like from a dangerous situation | Takato Yamakoshi, Shigeru Arakawa | 1987-03-17 |
| 4306283 | Power factor improving apparatus for power converter | Hisakatsu Kiwaki, Kyozo Tachibana, Katsuaki Suzuki, Tatsuo Horie, Yutaka Suzuki +1 more | 1981-12-15 |