Issued Patents All Time
Showing 26–50 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7326991 | Nonvolatile semiconductor memory and method of operating the same | — | 2008-02-05 |
| 7283391 | Semiconductor memory device | Naoki Ueda, Nobuhiko Ito | 2007-10-16 |
| 7276761 | Semiconductor memory device having insulating film of varying thickness over bit lines | — | 2007-10-02 |
| 7224611 | Virtual ground line type memory device with high speed readout circuit | Kaoru Yamamoto, Nobuhiko Ito | 2007-05-29 |
| 7187029 | Nonvolatile semiconductor memory device with floating gate and two control gates | Yasuhiro Sugita | 2007-03-06 |
| 7151693 | Method of writing data to a non-volatile semiconductor memory | — | 2006-12-19 |
| 7057944 | Semiconductor readout circuit | Nobuhiko Ito, Kaoru Yamamoto | 2006-06-06 |
| 7002204 | Non-volatile semiconductor memory and process of fabricating the same | Naoki Ueda, Yasuhiro Sugita | 2006-02-21 |
| 6952031 | Nonvolatile semiconductor memory and method of operating the same | — | 2005-10-04 |
| 6894913 | Non-volatile semiconductor memory and method of operating the same | — | 2005-05-17 |
| 6873007 | Nonvolatile semiconductor memory device and process for producing the same | Yasuhiro Sugita | 2005-03-29 |
| 6643175 | Nonvolatile semiconductor storage device and test method therefor | Nobuhiko Ito | 2003-11-04 |
| 6531732 | Nonvolatile semiconductor memory device, process of manufacturing the same and method of operating the same | Yasuhiro Sugita | 2003-03-11 |
| 6512692 | Nonvolatile semiconductor storage device and test method therefor | Nobuhiko Ito | 2003-01-28 |
| 6493264 | Nonvolatile semiconductor memory, method of reading from and writing to the same and method of manufacturing the same | — | 2002-12-10 |
| 6438035 | Nonvolatile semiconductor storage device | Kaoru Yamamoto, Nobuhiko Ito | 2002-08-20 |
| 6392927 | Cell array, operating method of the same and manufacturing method of the same | — | 2002-05-21 |
| RE37199 | Method of making nonvolatile semiconductor memory | — | 2001-05-29 |
| 6101128 | Nonvolatile semiconductor memory and driving method and fabrication method of the same | — | 2000-08-08 |
| 6009011 | Non-volatile memory and method for operating the same | — | 1999-12-28 |
| 5962889 | Nonvolatile semiconductor memory with a floating gate that has a bottom surface that is smaller than the upper surface | Masanori Yoshimi, Shinichi Sato, Keizo Sakiyama | 1999-10-05 |
| 5877054 | Method of making nonvolatile semiconductor memory | — | 1999-03-02 |
| 5606193 | DRAM and MROM cells with similar structure | Naoki Ueda, Kenichi Tanaka | 1997-02-25 |
| 5510284 | Method for manufacturing an asymetric non-volatile memory | — | 1996-04-23 |
| 5424232 | Method for manufacturing a non-volatile memory having a floating gate oxide type fet provided with a tunnel oxide film | — | 1995-06-13 |