Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7129135 | Nonvolatile semiconductor memory device and method for fabricating the same | — | 2006-10-31 |
| 6872624 | Method of fabricating nonvolatile semiconductor memory device | Fumihiko Noro, Takahiko Hashidzume | 2005-03-29 |
| 6538937 | Nonvolatile semiconductor memory test circuit and method, nonvolatile semiconductor memory and method for fabricating nonvolatile semiconductor memory | Takahiko Hashidzume | 2003-03-25 |
| 6274901 | Nonvolatile semiconductor memory device and method for fabricating the same | Takashi Maejima, Hidenori Tanaka, Mitsuyoshi Andou | 2001-08-14 |
| 6165825 | Semiconductor device and method for producing the same | — | 2000-12-26 |
| 6030869 | Method for fabricating nonvolatile semiconductor memory device | Takashi Maejima, Hidenori Tanaka, Mitsuyoshi Andou, Toshimoto Kubota | 2000-02-29 |
| 5715196 | Method for driving a non-volatile semiconductor memory | Akira Asai, Yasushi Okuda, Toshiki Mori, Ichirou Nakao | 1998-02-03 |
| 5627779 | Non-volatile semiconductor memory having an array of non-volatile memory cells and method for driving the same | Akira Asai, Yasushi Okuda, Toshiki Mori, Ichirou Nakao | 1997-05-06 |
| 5510639 | Non-volatile semiconductor memory having a ring-shaped floating gate | Yasushi Okuda, Ichiro Nakao, Youhei Ichikawa | 1996-04-23 |
| 5500379 | Method of manufacturing semiconductor device | Teruhito Ohnishi, Minoru Fujii | 1996-03-19 |
| 5359554 | Semiconductor memory device having an energy gap for high speed operation | Yasushi Okuda | 1994-10-25 |