Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9793292 | Three-dimensional semiconductor memory devices | Changhyun Lee, Hyejin Cho | 2017-10-17 |
| 9754957 | Nonvolatile memory devices and methods forming the same | Changhyun Lee | 2017-09-05 |
| 9627396 | Semiconductor device including a stack having a sidewall with recessed and protruding portions | Yoocheol Shin, Changhyun Lee, Hyunjung Kim, Chung-Il Hyun | 2017-04-18 |
| 9536895 | Methods of fabricating three-dimensional semiconductor devices | Changhyun Lee, Chanjin Park, Sung-Il Chang | 2017-01-03 |