Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7498220 | Methods of fabricating semiconductor memory devices including different dielectric layers for the cell transistors and refresh transistors thereof | — | 2009-03-03 |
| 7115497 | Method for forming storage node contact plug of DRAM (dynamic random access memory) | — | 2006-10-03 |
| 6867445 | Semiconductor memory devices including different thickness dielectric layers for the cell transistors and refresh transistors thereof | — | 2005-03-15 |
| 6849889 | Semiconductor device having storage node contact plug of DRAM (dynamic random access memory) | — | 2005-02-01 |
| 6436758 | Method for forming storage node contact plug of DRAM (dynamic random access memory) | — | 2002-08-20 |
| 6383862 | Method of forming a contact hole in a semiconductor substrate using oxide spacers on the sidewalls of the contact hole | — | 2002-05-07 |
| 6229214 | Method for fabricating contact electrode of the semiconductor device | — | 2001-05-08 |
| 6221714 | Method of forming a contact hole in a semiconductor substrate using oxide spacers on the sidewalls of the contact hole | — | 2001-04-24 |
| 6143602 | Methods of forming memory device storage capacitors using protruding contact plugs | — | 2000-11-07 |