Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5288956 | Self running type elevator system using linear motors | Ryoichi Kurosawa | 1994-02-22 |
| 4933828 | Control system for voltage-source pulse width modulation step-up rectifier | Yutaka Ogawa | 1990-06-12 |