Issued Patents 1982
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 4327315 | Induction motor drive apparatus | Hiroshi Ishida, Yutaka Koiwai | 1982-04-27 |
| 4322671 | Induction motor drive apparatus | Hiroshi Ishida, Yutaka Koiwai | 1982-03-30 |
| 4319177 | Operation control apparatus for AC motors | Hiroshi Ishida | 1982-03-09 |
| 4314191 | Protective system for inverter circuit used in driving AC motors | Hiroshi Ishida | 1982-02-02 |