Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8980722 | Variable resistive element, and its manufacturing method | Kazuya Ishihara, Takahiro Shibuya, Tetsuya Ohnishi, Takashi Nakano | 2015-03-17 |
| RE45345 | Nonvolatile semiconductor memory device | Shinobu Yamazaki, Nobuyoshi Awaya, Shinichi Sato, Kenichi Tanaka | 2015-01-20 |
| 8497492 | Variable resistive element, and its manufacturing method | Kazuya Ishihara, Takahiro Shibuya, Tetsuya Ohnishi, Takashi Nakano | 2013-07-30 |
| 8139392 | Nonvolatile semiconductor memory device and writing method of the same | — | 2012-03-20 |
| 8115586 | Variable resistance element, and its manufacturing method | Kazuya Ishihara, Takahiro Shibuya, Tetsuya Ohnishi, Takashi Nakano | 2012-02-14 |
| 8054674 | Variable resistive element, manufacturing method for same, and non-volatile semiconductor memory device | Yukio Tamai, Nobuyoshi Awaya, Shigeo Ohnishi, Kazuya Ishihara, Hisashi Shima +2 more | 2011-11-08 |
| 8023312 | Nonvolatile semiconductor memory device | Shinobu Yamazaki, Nobuyoshi Awaya, Shinichi Sato, Kenichi Tanaka | 2011-09-20 |
| 7978047 | Variable resistor element and its manufacturing method | Shigeo Ohnishi, Yasushi Ogimoto, Takashi Oka, Naoto Nagaosa, Yoshinori Tokura | 2011-07-12 |
| 7952909 | Nonvolatile semiconductor memory device | Kohji Inoue, Shigeo Ohnishi, Nobuyoshi Awaya | 2011-05-31 |
| 7894239 | Variable resistance element, method for producing the same, and nonvolatile semiconductor storage device | Yukio Tamai, Nobuyoshi Awaya, Shigeo Ohnishi, Kazuya Ishihara, Hisashi Shima +2 more | 2011-02-22 |
| 7884699 | Variable resistor element, manufacturing method thereof, and memory device provided with it | — | 2011-02-08 |
| 7796416 | Variable resistance element, its manufacturing method and semiconductor memory device comprising the same | Kazuya Ishihara, Shinji Kobayashi | 2010-09-14 |
| 7615459 | Manufacturing method for variable resistive element | Yushi Inoue, Tetsuya Ohnishi, Kazuya Ishihara, Takahiro Shibiuya, Shinobu Yamazaki +1 more | 2009-11-10 |
| 7433222 | Nonvolatile semiconductor memory device | Nobuyoshi Awaya, Isao Inoue | 2008-10-07 |
| 7236388 | Driving method of variable resistance element and memory device | Yukio Tamai, Kazuya Ishihara, Shinji Kobayashi, Nobuyoshi Awaya | 2007-06-26 |
| 6717838 | Semiconductor storage device with ferroelectric capacitor and read transistor having gate communicating with bit line | — | 2004-04-06 |
| 6341082 | Ferroelectric memory capable of suppressing deterioration of dummy cells and drive method therefor | — | 2002-01-22 |