Issued Patents All Time
Showing 51–67 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7570511 | Semiconductor memory device having a three-dimensional cell array structure | Woo-Yeong Cho, Du-Eung Kim | 2009-08-04 |
| 7542356 | Semiconductor memory device and method for reducing cell activation during write operations | Kwang-Jin Lee, Hyung-Rok Oh, Beak-Hyung Cho, Woo-Yeong Cho | 2009-06-02 |
| 7522449 | Phase change memory device and related programming method | Yu-Hwan Ro, Kwang-Jin Lee, Woo-Yeong Cho | 2009-04-21 |
| 7515459 | Method of programming a memory cell array using successive pulses of increased duration | Du-Eung Kim, Beak-Hyung Cho, Hye Jin Kim | 2009-04-07 |
| 7499306 | Phase-change memory device and method that maintains the resistance of a phase-change material in a set state within a constant resistance range | Byung-Gil Choi, Choong-Keun Kwak, Joon-Yong Choi | 2009-03-03 |
| 7471553 | Phase change memory device and program method thereof | Kwang-Jin Lee, Du-Eung Kim, Woo-Yeong Cho | 2008-12-30 |
| 7457151 | Phase change random access memory (PRAM) device having variable drive voltages | Woo-Yeong Cho, Du-Eung Kim, Choong-Keun Kwak | 2008-11-25 |
| 7436693 | Phase-change semiconductor memory device and method of programming the same | Du-Eung Kim, Hyung-Rok Oh | 2008-10-14 |
| 7436711 | Semiconductor memory device | Beak-Hyung Cho, Hyung-Rok Oh | 2008-10-14 |
| 7427531 | Phase change memory devices employing cell diodes and methods of fabricating the same | Woo-Yeong Cho, Du-Eung Kim, Yun-seung Shin, Hyun-Geun Byun, Beak-Hyung Cho +1 more | 2008-09-23 |
| 7391669 | Semiconductor memory device and core layout thereof | Hye Jin Kim, Choong-Keun Kwak, Woo-Yeong Cho | 2008-06-24 |
| 7352616 | Phase change random access memory, boosting charge pump and method of generating write driving voltage | Du-Eung Kim, Hyung-Rok Oh, Kwang-Jin Lee | 2008-04-01 |
| 7349245 | Non-volatile phase-change memory device and associated program-suspend-read operation | Hye Jin Kim, Kwang-Jin Lee, Mu-Hui Park | 2008-03-25 |
| 7317655 | Memory cell array biasing method and a semiconductor memory device | Beak-Hyung Cho, Du-Eung Kim, Choong-Keun Kwak, Woo-Yeong Cho, Hyung-Rok Oh | 2008-01-08 |
| 7280391 | Phase change memory device for use in a burst read operation and a data reading method thereof | Woo-Yeong Cho | 2007-10-09 |
| 7262990 | Semiconductor memory device | Beak-Hyung Cho, Hyung-Rok Oh | 2007-08-28 |
| 7190607 | Phase-change memory element driver circuits using measurement to control current and methods of controlling drive current of phase-change memory elements using measurement | Woo-Yeong Cho | 2007-03-13 |