Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6107138 | Method for fabricating a semiconductor device having a tapered contact hole | Ei Sam Jeong, Sang-wook Kim, Byung Suk Lee | 2000-08-22 |
| 5451291 | Method for forming a via contact hole of a semiconductor device | Sung-Kil Park, Dong-Sauk Kim | 1995-09-19 |
| 4999312 | Doping method using an oxide film and a nitride film on the trench wall to manufacture a semiconductor device and the manufactured device | — | 1991-03-12 |
| 4994409 | Method for manufacturing a trench capacitor using a photoresist etch back process | Cheol Kyu Bok | 1991-02-19 |