Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9665426 | Semiconductor device and reading method | Jiezhi Chen, Kuniharu Takahashi, Hiroyuki Nagashima, Yuichiro Mitani, Katsuki Matsudera | 2017-05-30 |
| 8687420 | Nonvolatile semiconductor memory device | Noboru Shibata | 2014-04-01 |
| 8406054 | Semiconductor memory device with improved ECC efficiency | Noboru Shibata | 2013-03-26 |
| 8379445 | Semiconductor storage device capable of reducing erasure time | Noboru Shibata | 2013-02-19 |
| 8379444 | Semiconductor memory device capable of accurate reading even when erasure level changes | Noboru Shibata | 2013-02-19 |
| 8270214 | Nonvolatile semiconductor memory device | Noboru Shibata | 2012-09-18 |
| 8116134 | Semiconductor memory device with improved ECC efficiency | Noboru Shibata | 2012-02-14 |
| 7813171 | Semiconductor memory device | Noboru Shibata | 2010-10-12 |
| 7414894 | Methods for identifying non-volatile memory elements with poor subthreshold slope or weak transconductance | Jeffrey W. Lutze, Jian Chen, Yan Li, Tomoharu Tanaka | 2008-08-19 |
| 7349249 | Semiconductor memory device | Mitsuaki Honma, Noboru Shibata | 2008-03-25 |
| 7317636 | Nonvolatile semiconductor memory, a data write-in method for the nonvolatile semiconductor memory and a memory card | Yugo Ide | 2008-01-08 |
| 7046555 | Methods for identifying non-volatile memory elements with poor subthreshold slope or weak transconductance | Jeffrey W. Lutze, Jian Chen, Yan Li, Tomoharu Tanaka | 2006-05-16 |
| 5556800 | Method of manufacturing a mask read only memory (ROM) for storing multi-value data | Makoto Takizawa | 1996-09-17 |
| 5386381 | Mask read only memory (ROM) for storing multi-value data | Makoto Takizawa | 1995-01-31 |
| 5374847 | Nonvolatile semiconductor memory device having a passivation film | Hitoshi Araki, Hiroyuki Sasaki | 1994-12-20 |
| 5364805 | Method of manufacturing an EEPROM having an erasing gate electrode | Tadayuki Taura, Masamichi Asano, Hiroshi Iwahashi | 1994-11-15 |
| 5278078 | Method of manufacturing semiconductor device | Satoshi Inagi | 1994-01-11 |
| 5252846 | Semiconductor memory device with an improved erroneous write characteristic and erasure characteristic | Shinichi Tanaka, Masayuki Hori, Noriyoshi Tozawa | 1993-10-12 |
| 5169797 | Manufacturing method for semiconductor storage device | Michiaki Noda, Kazushige Inagawa | 1992-12-08 |
| 5094971 | Method of manufacturing a read only semiconductor memory device | — | 1992-03-10 |