Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9177657 | Semiconductor device having non-volatile memory with data erase scheme | Tomoya Ogawa, Takashi Ito | 2015-11-03 |
| 8242808 | Decoder circuit | Makoto Muneyasu, Masahiro Hosoda | 2012-08-14 |
| 7969200 | Decoder circuit | Makoto Muneyasu, Masahiro Hosoda | 2011-06-28 |
| 7795922 | Decoder circuit | Makoto Muneyasu, Masahiro Hosoda | 2010-09-14 |
| 7050336 | Nonvolatile semiconductor memory device having reduced erasing time | Minoru Nakamura | 2006-05-23 |
| 6870771 | Nonvolatile semiconductor memory device that can suppress effect of threshold voltage variation of memory cell transistor | Atsushi Ohba, Toshimasa Makino | 2005-03-22 |
| 6781882 | Nonvolatile semiconductor storage device having a shortened time required for a data erasing operation and data erasing method thereof | Satoshi Shimizu | 2004-08-24 |
| 6515908 | Nonvolatile semiconductor memory device having reduced erase time and method of erasing data of the same | Yoshikazu Miyawaki, Satoshi Shimizu, Atsushi Ohba | 2003-02-04 |
| 5574684 | Flash memory having data refresh function and data refresh method of flash memory | — | 1996-11-12 |