Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8497646 | Controller for AC electric motor and electric powered vehicle | Kenji Yamada, Toshifumi Yamakawa, Toshikazu Ono | 2013-07-30 |
| 8264181 | Controller for motor drive control system | Toshifumi Yamakawa, Kenji Yamada | 2012-09-11 |