Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |