Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6051880 | Base layer structure covering a hole of decreasing diameter in an insulation layer in a semiconductor device | — | 2000-04-18 |
| 5691571 | Semiconductor device having fine contact hole with high aspect ratio | Kazuyuki Hirose | 1997-11-25 |
| 4983534 | Semiconductor device and method of manufacturing the same | — | 1991-01-08 |