Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6737344 | Method for manufacturing nonvolatile semiconductor memory with narrow variation in threshold voltages of memory cells | Satoru Yamagata | 2004-05-18 |
| 6395619 | Process for fabricating a semiconductor device | Takuji Tanigami, Kenji Hakozaki, Naoyuki Shinmura, Shinichi Sato, Takayuki Taniguchi | 2002-05-28 |
| 6091632 | Nonvolatile semiconductor storage device having a plurality of blocks of memory cell transistors formed on respective wells isolated from each other | Shinichi Sato | 2000-07-18 |
| 5962889 | Nonvolatile semiconductor memory with a floating gate that has a bottom surface that is smaller than the upper surface | Yoshimitsu Yamauchi, Shinichi Sato, Keizo Sakiyama | 1999-10-05 |
| 5290721 | Method of making a stacked semiconductor nonvolatile memory device | Yoshimitsu Yamauchi, Kiyoshige Omori | 1994-03-01 |