Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8405156 | Semiconductor device and manufacturing method thereof | Hiroshi Yoshida | 2013-03-26 |
| 5798544 | Semiconductor memory device having trench isolation regions and bit lines formed thereover | Masato Sakao, Yoshihiro Takaishi, Kiyonori Kajiyana, Takeshi Akimoto, Shizuo Oguro +1 more | 1998-08-25 |
| 5548157 | Semiconductor device capable of increasing reliability | Masato Sakao | 1996-08-20 |
| 5466964 | Semiconductor device capable of increasing reliability | Masato Sakao | 1995-11-14 |
| 5298775 | Semiconductor memory device having stacked-type capacitor of large capacitance | — | 1994-03-29 |
| 5162881 | Dynamic random access memory device having rampart structure outside memory cell array | — | 1992-11-10 |