Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10074971 | Excitation inrush current suppressing apparatus and excitation inrush current suppressing method | Kei Kawasaki, Tadashi Koshizuka, Shiro Maruyama, Minoru Saito | 2018-09-11 |
| 9583934 | Excitation inrush current suppression device | Kei Kawasaki, Tadashi Koshizuka, Shiro Maruyama, Minoru Saito | 2017-02-28 |
| 9197057 | Magnetizing inrush current suppression apparatus | Keisuke Udagawa, Tadashi Koshizuka, Shiro Maruyama, Minoru Saitoh | 2015-11-24 |
| 8564159 | Transformer inrush current suppression apparatus | Keisuke Udagawa, Tadashi Koshizuka, Shiro Maruyama, Minoru Saito | 2013-10-22 |