Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6649542 | Multi-level type nonvolatile semiconductor memory device | Yasuo Sato | 2003-11-18 |
| 6605839 | Multi-level type nonvolatile semiconductor memory device | Yasuo Sato | 2003-08-12 |
| 6596567 | METHOD FOR FABRICATING A SEMICONDUCTOR DEVICE HAVING A IMPURITY LAYER DISPOSED BETWEEN A NON-DOPED SILICON FILM AND HIGH MELTING-POINT METAL FILM FOR REDUCING SOLID STATE REACTION BETWEEN SAID HIGH MELTING-POINT METAL FILM AND POLYCRYSTAL SILICON FILM | — | 2003-07-22 |
| 6596590 | Method of making multi-level type non-volatile semiconductor memory device | Yasuo Sato | 2003-07-22 |