Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7235941 | Phase commutation method of brushless direct current motor | Pyeong Ki Park, Koji Hamaoka, Han Joo Yoo, Jeong Ho Seo, Hun Yub Bae +1 more | 2007-06-26 |
| 7190131 | Device and method for starting brushless direct current motor | Koji Hamaoka, Han Joo Yoo, Pyeong Ki Park, Hun Yub Bae, Yun-Jeong Kim +1 more | 2007-03-13 |