Issued Patents All Time
Showing 25 most recent of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9543007 | Semiconductor device including memory cell and sense amplifer, and IC card including semiconductor device | Yoshikazu Katoh | 2017-01-10 |
| 9484090 | Read and write methods for a resistance change non-volatile memory device | Yuhei Yoshimoto, Kazuhiko Shimakawa, Ken Kawai | 2016-11-01 |
| 9336881 | Variable resistance nonvolatile memory device including a variable resistance layer that changes reversibly between a low resistance state and a high resistance state according to an applied electrical signal | Kazuhiko Shimakawa, Ken Kawai, Shunsaku Muraoka | 2016-05-10 |
| 9183925 | Variable resistance nonvolatile memory device and method of performing the forming operation | Yoshikazu Katoh | 2015-11-10 |
| 9087581 | Cross point variable resistance nonvolatile memory device and method of writing thereby | Kazuhiko Shimakawa, Yoshikazu Katoh | 2015-07-21 |
| 9053787 | Crosspoint nonvolatile memory device and method of driving the same | Kazuhiko Shimakawa, Yoshikazu Katoh, Akifumi Kawahara | 2015-06-09 |
| 9053788 | Cross-point variable resistance nonvolatile memory device | Kazuhiko Shimakawa | 2015-06-09 |
| 8982603 | Cross point variable resistance nonvolatile memory device and method of reading thereby | Kazuhiko Shimakawa, Yoshikazu Katoh | 2015-03-17 |
| 8953363 | Nonvolatile semiconductor memory device and read method for the same | Kazuhiko Shimakawa, Kiyotaka Tsuji | 2015-02-10 |
| 8942050 | Method of inspecting variable resistance nonvolatile memory device and variable resistance nonvolatile memory device | Hiroshi Tomotani, Kazuhiko Shimakawa, Yoshikazu Katoh, Yuichiro Ikeda | 2015-01-27 |
| 8923032 | Crosspoint nonvolatile memory device and forming method thereof | Kazuhiko Shimakawa, Akifumi Kawahara, Ken Kawai | 2014-12-30 |
| 8902635 | Variable resistance nonvolatile memory device and method of writing thereby | Akifumi Kawahara, Kazuhiko Shimakawa, Kouhei Tanabe | 2014-12-02 |
| 8885387 | Cross point variable resistance nonvolatile memory device | Kazuhiko Shimakawa | 2014-11-11 |
| 8848424 | Variable resistance nonvolatile memory device, and accessing method for variable resistance nonvolatile memory device | Yuichiro Ikeda, Kazuhiko Shimakawa | 2014-09-30 |
| 8848426 | Cross-point variable resistance nonvolatile memory device and reading method for cross-point variable resistance nonvolatile memory device | Kazuhiko Shimakawa | 2014-09-30 |
| 8687409 | Variable resistance nonvolatile memory device | Yuichiro Ikeda, Kazuhiko Shimakawa, Ken Kawai | 2014-04-01 |
| 8665633 | Nonvolatile variable resistance memory element writing method, and nonvolatile variable resistance memory device | Kazuhiko Shimakawa, Shunsaku Muraoka, Ken Kawai | 2014-03-04 |
| 8467229 | Variable resistance nonvolatile memory device | Yuichiro Ikeda, Kazuhiko Shimakawa | 2013-06-18 |
| 8467228 | Variable resistance nonvolatile memory device | Yuichiro Ikeda, Kazuhiko Shimakawa | 2013-06-18 |
| 8441837 | Variable resistance nonvolatile memory device | Yuuichirou Ikeda, Kazuhiko Shimakawa, Yoshihiko Kanzawa, Shunsaku Muraoka | 2013-05-14 |
| 8441839 | Cross point variable resistance nonvolatile memory device | Kazuhiko Shimakawa | 2013-05-14 |
| 8395925 | Forming method for variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device | Ken Kawai, Kazuhiko Shimakawa, Shunsaku Muraoka | 2013-03-12 |
| 8384061 | Nonvolatile memory device and manufacturing method | Takumi Mikawa, Kenji Tominaga, Kazuhiko Shimakawa | 2013-02-26 |
| 8325508 | Writing method for variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device | Ken Kawai, Kazuhiko Shimakawa, Shunsaku Muraoka | 2012-12-04 |
| 8320159 | Resistance variable nonvolatile memory device | Zhiqiang Wei, Takeshi Takagi, Mitsuteru Iijima, Yoshihiko Kanzawa | 2012-11-27 |