Issued Patents All Time
Showing 1–25 of 116 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10515672 | Semiconductor memory device and test method therefor | Shinji Tanaka, Yuichiro Ishii, Yoshikazu Saito | 2019-12-24 |
| 10170161 | Semiconductor memory device and test method therefor | Shinji Tanaka, Yuichiro Ishii, Yoshikazu Saito | 2019-01-01 |
| 9805821 | Semiconductor memory device and test method therefor | Shinji Tanaka, Yuichiro Ishii, Yoshikazu Saito | 2017-10-31 |
| 8061895 | Semiconductor device | — | 2011-11-22 |
| 7983103 | Semiconductor memory device suitable for mounting on portable terminal | — | 2011-07-19 |
| RE41245 | Semiconductor memory device | Ryu Makabe, Hirotoshi Sato, Shinichi Kobayashi | 2010-04-20 |
| 7693004 | Semiconductor memory device | — | 2010-04-06 |
| 7447098 | Semiconductor memory device having complete hidden refresh function | — | 2008-11-04 |
| 7397298 | Semiconductor device having internal power supply voltage generation circuit | — | 2008-07-08 |
| 7301843 | Semiconductor memory device having complete hidden refresh function | — | 2007-11-27 |
| 7145832 | Fully-hidden refresh dynamic random access memory | Takafumi Takatsuka, Hirotoshi Sato | 2006-12-05 |
| 7111112 | Semiconductor memory device having control circuit | — | 2006-09-19 |
| 7061828 | Fully-hidden refresh dynamic random access memory | Takafumi Takatsuka, Hirotoshi Sato | 2006-06-13 |
| 6956758 | Fully-hidden refresh dynamic random access memory | Takafumi Takatsuka, Hirotoshi Sato | 2005-10-18 |
| 6891770 | Fully hidden refresh dynamic random access memory | Takafumi Takatsuka, Hirotoshi Sato | 2005-05-10 |
| 6882586 | Semiconductor memory device equipped with control circuit for controlling memory cell array in non-normal operation mode | Hirotoshi Sato | 2005-04-19 |
| 6859415 | Fully-hidden refresh dynamic random access memory | Takafumi Takatsuka, Hirotoshi Sato | 2005-02-22 |
| 6859403 | Semiconductor memory device capable of overcoming refresh disturb | Hideto Hidaka, Mikio Asakura, Kazuyasu Fujishima, Tsukasa Ooishi, Kazutami Arimoto +1 more | 2005-02-22 |
| 6813211 | Fully hidden refresh dynamic random access memory | Takafumi Takatsuka, Hirotoshi Sato | 2004-11-02 |
| 6798236 | Output buffer circuit with power supply voltages different from a power supply voltage applied to an internal circuit | Tadayuki Shimizu, Takafumi Takatsuka | 2004-09-28 |
| 6795943 | Semiconductor device with test mode | Hirotoshi Sato, Ryu Makabe | 2004-09-21 |
| 6744679 | Semiconductor memory device | Hirotoshi Sato, Takafumi Takatsuka | 2004-06-01 |
| 6737906 | Semiconductor integrated circuit device including a negative power supply circuit | Minoru Senda | 2004-05-18 |
| 6721225 | Semiconductor memory device with activation of a burst refresh when a long cycle is detected | — | 2004-04-13 |
| 6717878 | Semiconductor device | Tsukasa Hagura | 2004-04-06 |