Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8848421 | Forming method of performing forming on variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device | Ken Kawai, Koji Katayama | 2014-09-30 |
| 8837200 | Nonvolatile semiconductor memory device and read method for the same | Kiyotaka Tsuji | 2014-09-16 |
| 8830730 | Variable resistance nonvolatile storage device and method of forming memory cell | Shunsaku Muraoka, Yoshihiko Kanzawa, Satoru Mitani, Koji Katayama, Satoru Fujii +1 more | 2014-09-09 |
| 8787070 | Reference cell circuit and variable resistance nonvolatile memory device including the same | — | 2014-07-22 |
| 8699261 | Variable resistance nonvolatile memory device and driving method thereof | Hiroshi Tomotani | 2014-04-15 |
| 8687409 | Variable resistance nonvolatile memory device | Yuichiro Ikeda, Ryotaro Azuma, Ken Kawai | 2014-04-01 |
| 8675387 | Variable resistance nonvolatile memory device and programming method for same | Yuichiro Ikeda, Yoshihiko Kanzawa, Shunsaku Muraoka, Yoshikazu Katoh | 2014-03-18 |
| 8665633 | Nonvolatile variable resistance memory element writing method, and nonvolatile variable resistance memory device | Ryotaro Azuma, Shunsaku Muraoka, Ken Kawai | 2014-03-04 |
| 8625328 | Variable resistance nonvolatile storage device | Hiroshi Tomotani, Ken Kawai | 2014-01-07 |
| 8624214 | Semiconductor device having a resistance variable element and a manufacturing method thereof | Takumi Mikawa | 2014-01-07 |
| 8553444 | Variable resistance nonvolatile storage device and method of forming memory cell | Shunsaku Muraoka, Yoshihiko Kanzawa, Satoru Mitani, Koji Katayama, Satoru Fujii +1 more | 2013-10-08 |
| 8472238 | Variable resistance nonvolatile storage device with oxygen-deficient oxide layer and asymmetric substrate bias effect | Yoshihiko Kanzawa, Satoru Mitani, Shunsaku Muraoka | 2013-06-25 |
| 8467228 | Variable resistance nonvolatile memory device | Yuichiro Ikeda, Ryotaro Azuma | 2013-06-18 |
| 8467229 | Variable resistance nonvolatile memory device | Yuichiro Ikeda, Ryotaro Azuma | 2013-06-18 |
| 8445319 | Nonvolatile memory element, manufacturing method thereof, and nonvolatile semiconductor apparatus using the nonvolatile memory element | Yoshihiko Kanzawa, Koji Katayama, Satoru Fujii, Shunsaku Muraoka, Koichi Osano +3 more | 2013-05-21 |
| 8441839 | Cross point variable resistance nonvolatile memory device | Ryotaro Azuma | 2013-05-14 |
| 8441837 | Variable resistance nonvolatile memory device | Yuuichirou Ikeda, Yoshihiko Kanzawa, Shunsaku Muraoka, Ryotaro Azuma | 2013-05-14 |
| 8395925 | Forming method for variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device | Ken Kawai, Shunsaku Muraoka, Ryotaro Azuma | 2013-03-12 |
| 8384061 | Nonvolatile memory device and manufacturing method | Takumi Mikawa, Kenji Tominaga, Ryotaro Azuma | 2013-02-26 |
| 8325508 | Writing method for variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device | Ken Kawai, Shunsaku Muraoka, Ryotaro Azuma | 2012-12-04 |
| 8305795 | Nonvolatile variable resistance memory element writing method, and nonvolatile variable resistance memory device | Ryotaro Azuma, Shunsaku Muraoka, Ken Kawai | 2012-11-06 |
| 8233311 | Variable resistance nonvolatile storage device having a source line formed of parallel wiring layers connected to each other through vias | Yoshihiko Kanzawa, Satoru Mitani, Shunsaku Muraoka | 2012-07-31 |
| 8198618 | Nonvolatile memory device and manufacturing method thereof | Takumi Mikawa, Kenji Tominaga, Ryotaro Azuma | 2012-06-12 |
| 8179714 | Nonvolatile storage device and method for writing into memory cell of the same | Takeshi Takagi, Shunsaku Muraoka, Mitsuteru Iijima, Ken Kawai | 2012-05-15 |
| 8154909 | Resistance variable memory apparatus | Ryotaro Azuma, Satoru Fujii | 2012-04-10 |