Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6259613 | Power factor correction (PFC) circuit | Sang-Woo Lee | 2001-07-10 |
| 6191565 | Power factor compensation controller | Sang-Woo Lee | 2001-02-20 |
| 6175218 | Power factor correction (PFC) controller | Nak-Choon Choi, Maeng-Ho Seo | 2001-01-16 |
| 6084451 | Pulse width modulation controller operational in both current and voltage mode | Nak-Choon Choi, Sang-Woo Lee | 2000-07-04 |