Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9324848 | Semiconductor device | Masakiyo Sumitomo | 2016-04-26 |
| 9178050 | Load-short-circuit-tolerant semiconductor device having trench gates | Yasushi Higuchi, Masakiyo Sumitomo | 2015-11-03 |
| 8659065 | Semiconductor device and method of manufacturing the same | Masakiyo Sumitomo, Yasushi Higuchi | 2014-02-25 |
| 6537884 | Semiconductor device and method of manufacturing the same including an offset-gate structure | Yukiaki Yogo | 2003-03-25 |
| 6339557 | Charge retention lifetime evaluation method for nonvolatile semiconductor memory | Tsutomu Kawaguchi, Mitsutaka Katada | 2002-01-15 |
| 5986302 | Semiconductor memory device | Tsutomu Kawaguchi, Takuya Okuno, Yukiaki Yogo | 1999-11-16 |
| 5877531 | MIS type semiconductor device and method for manufacturing same | Ryoichi Kubokoya, Kenji Shiratori, Nobuyuki Ooya | 1999-03-02 |
| 5834347 | MIS type semiconductor device and method for manufacturing same | Ryoichi Kubokoya, Kenji Shiratori, Nobuyuki Ooya | 1998-11-10 |
| 5830771 | Manufacturing method for semiconductor device | Ryouichi Kubokoya, Akira Kuroyanagi | 1998-11-03 |
| 5279981 | Method of reducing the trap density of an oxide film for application to fabricating a nonvolatile memory cell | Akiyoshi Asai | 1994-01-18 |