Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6665183 | Power supply apparatus | Kunio Shikata, Masao Katooka, Yoshimasa Kawashima | 2003-12-16 |
| 6636140 | High-frequency large current handling transformer | Toshikazu Fujiyoshi, Masao Katooka, Tetsuro Ikeda, Kenji Morimoto | 2003-10-21 |
| D474738 | Power supply apparatus | Masao Katooka, Yoshimasa Kawashima | 2003-05-20 |
| 6507004 | DC power supply apparatus for arc-utilizing apparatuses | Tetsuro Ikeda, Toru Arai | 2003-01-14 |