Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636140 | High-frequency large current handling transformer | Toshikazu Fujiyoshi, Masao Katooka, Kenji Morimoto, Hideo Ishii | 2003-10-21 |
| 6507004 | DC power supply apparatus for arc-utilizing apparatuses | Toru Arai, Hideo Ishii | 2003-01-14 |