Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683923 | Semiconductor memory device capable of electrically erasing and writing information and a manufacturing method of the same | Masahiro Shimizu, Masayoshi Shirahata, Takashi Kuroi | 1997-11-04 |
| 5598019 | Semiconductor device having trench isolation structure and method of manufacturing the same | Shigeki Komori | 1997-01-28 |