Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7300293 | Attachment for preventing cover from falling off | Masao Katooka, Shuji Yokoyama | 2007-11-27 |
| 6665183 | Power supply apparatus | Kunio Shikata, Masao Katooka, Hideo Ishii | 2003-12-16 |
| D474738 | Power supply apparatus | Hideo Ishii, Masao Katooka | 2003-05-20 |
| 5424915 | Cooling structure for power supply device | Masao Katooka, Makoto Sakurada, Atsushi Makitani | 1995-06-13 |