Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7086132 | Method for assembling a polishing head and apparatus for detecting air leakage in the polishing head while assembling the same | Bong-hwoan Choi, Jung-Hwan Sung, Yong-Seok Ro | 2006-08-08 |
| 6754942 | Method for assembling a polishing head and apparatus for detecting air leakage in the polishing head while assembling the same | Bong-hwoan Choi, Jung-Hwan Sung, Yong-Seok Ro | 2004-06-29 |