Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8045787 | System for analyzing mask topography and method of forming image using the system | Soo Han Choi, Yong-jin Chun, Moon-Hyun Yoo, Joon-Ho Choi | 2011-10-25 |
| 7432043 | Photo mask and method of manufacturing the same, and method of forming photosensitive film pattern of using the photo mask | — | 2008-10-07 |
| 7052807 | Photo mask and method of manufacturing the same, and method of forming photosensitive film pattern of using the photo mask | — | 2006-05-30 |
| 6815311 | Method for fabricating semiconductor memory device | Chul Chan Choi | 2004-11-09 |
| 6767672 | Method for forming a phase-shifting mask for semiconductor device manufacture | Hee-Bom Kim, Sang Sool Koo | 2004-07-27 |