Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5635748 | NAND ROM with transistor strings located at trench bottoms as well as between trenches | — | 1997-06-03 |
| 5625586 | Semiconductor memory having a plurality of memory banks and sub-bit lines which are connected to a main bit line via MOS transistors whose gates are commonly connected to a selection line | Kazuyuki Yamasaki, Kazutaka Otsuki | 1997-04-29 |
| 5593904 | Method for manufacturing NAND type semiconductor memory device | Kazutaka Otsuki | 1997-01-14 |