Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9287783 | Power supply device | Shigeharu Yamashita, Kazuomi Watanabe | 2016-03-15 |
| 7236381 | Current balancing circuit | Shigeharu Yamashita, Kazuhiko Itakura | 2007-06-26 |
| 6778417 | Electric-power supplying devices switching between a synchronous rectification and a diode rectification by gradually altering a switching pulse | Kazuhiko Itakura, Hiroshi Shimamori, Kazutoshi Fuchigami | 2004-08-17 |