Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5999420 | Switching power source | Masakazu Takagi | 1999-12-07 |
| 5909107 | Step up switching power unit and filter circuit | Yasuhiro Murai | 1999-06-01 |
| 5856917 | Electric power device with improved power factor | Shigetaka Maeyama, Hiromitsu Hirayama, Hiroko Hirayama, heiress, Hiroshi Hirayama, Hisahiko Abe | 1999-01-05 |