Issued Patents All Time
Showing 26–50 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831846 | Switching power source circuit with drive frequency variably controlled by switching element | — | 2004-12-14 |
| 6747883 | Switching power supply circuit | — | 2004-06-08 |
| 6731521 | Switching power supply circuit | — | 2004-05-04 |
| 6687137 | Resonant switching power supply circuit with voltage doubler output | — | 2004-02-03 |
| 6590787 | Wide range zero voltage switching resonance type converter | — | 2003-07-08 |
| 6587358 | Switching power supply circuit | — | 2003-07-01 |
| 6577510 | Switching power supply | — | 2003-06-10 |
| 6515875 | Switching power supply circuit | — | 2003-02-04 |
| 6496389 | Power factor improving switching circuit | — | 2002-12-17 |
| 6456509 | Power loss of switching power supply circuit for supplying constant voltage | — | 2002-09-24 |
| 6452817 | Switching power supply circuit | — | 2002-09-17 |
| 6411528 | Switching power circuit and insulating converter transformer | — | 2002-06-25 |
| 6396717 | Switching power supply having an improved power factor by voltage feedback | — | 2002-05-28 |
| 6388902 | Switching power supply circuit | — | 2002-05-14 |
| 6370043 | Switching power supply circuit formed as a composite resonance converter | — | 2002-04-09 |
| 6370041 | Switching power supply circuit for generating DC high voltage | — | 2002-04-09 |
| 6366476 | Switching power supply apparatus with active clamp circuit | — | 2002-04-02 |
| 6356465 | Switching power supply apparatus with active clamp circuit | — | 2002-03-12 |
| 6349046 | Switching power supply circuit | — | 2002-02-19 |
| 6341075 | High voltage stabilizing circuit | — | 2002-01-22 |
| 6320765 | Switching power circuit | — | 2001-11-20 |
| 6317337 | Switching power supply circuit | — | 2001-11-13 |
| 6310786 | Switching power-supply circuit | — | 2001-10-30 |
| 6301129 | Switching power supply circuit | — | 2001-10-09 |
| 6278620 | Switching power-supply circuit | — | 2001-08-21 |