Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11467111 | Crack detection device | Kazuhide Okazaki, Masaru Yamana | 2022-10-11 |
| 8044632 | Power conversion device | Takahiro Kikuchi, Takeshi Tanaka, Daisuke Ito, Keita Hatanaka | 2011-10-25 |
| 5113126 | Control device for electric car | Tatsusuke Nanzan, Masahiko Nakamoto, Noriaki Nakamoto, Mikio Ohta | 1992-05-12 |
| 5061883 | Braking system for electric railcars including means for controlling electric brake force | Yumiko Asano, Shigeya Ohhama | 1991-10-29 |
| 4894745 | Method and apparatus for protecting against semiconductor power control failure | Eiji Akagawa, Yumiko Asano | 1990-01-16 |
| 4686434 | Electric vehicle monitoring system | Shigeru Kojima | 1987-08-11 |
| 4607321 | Inverter | — | 1986-08-19 |