Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6627575 | Double metal cyanide complex catalyst for producing polyol | Il-Ryong Kim | 2003-09-30 |
| 6509699 | Digital controlled electronic ballast with piezoelectric transformer | Jong Soo Kim, Jong Sun Kim, Choong Sik Yoo, Jong-Man Jung | 2003-01-21 |