Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12289052 | Integrated circuit and power supply circuit | Yuta Endo | 2025-04-29 |
| 12244233 | Integrated circuit having switching control and power supply circuit including the same | — | 2025-03-04 |
| 12155311 | Integrated circuit for load-state-based control and power supply circuit containing the same | — | 2024-11-26 |
| 10581332 | Dimmer and power converter | — | 2020-03-03 |
| 10469064 | Power converter | — | 2019-11-05 |
| 10291133 | Switching power supply device | — | 2019-05-14 |
| 9825540 | Switching power supply apparatus | — | 2017-11-21 |
| 9240713 | Switching power supply device | — | 2016-01-19 |
| 9036383 | Power supply device control circuit | — | 2015-05-19 |
| 8716988 | Power factor correction type switching power supply unit | Jian Chen | 2014-05-06 |
| 8379419 | Soft-stop overvoltage protection circuit for power factor correction type switching power supply unit | Jian Chen | 2013-02-19 |
| 8310795 | Power factor correction type switching power supply unit | Jian Chen | 2012-11-13 |
| 7629668 | Composite semiconductor device | Takeshi Yokoyama, Tomonori Seki | 2009-12-08 |
| 7564228 | Switching regulator | — | 2009-07-21 |
| 6340870 | Lighting circuit for discharge lamp | Masayasu Yamashita | 2002-01-22 |
| 6208089 | Discharge-lamp lighting circuit | Masayasu Ito, Atsushi Toda | 2001-03-27 |
| 6087776 | Discharge lamp lighting circuit with protection circuit | Masayasu Yamashita, Atsushi Toda | 2000-07-11 |
| 6002215 | Lighting circuit for discharge lamp | Masayasu Yamashita, Atsushi Toda | 1999-12-14 |
| 5973457 | Lighting circuit for discharge lamp | Masayasu Yamashita, Atsushi Toda | 1999-10-26 |
| 5914566 | Lighting circuit for applying a negative AC voltage to a discharge lamp | Akihiro Matsumoto, Masayasu Yamashita | 1999-06-22 |