Issued Patents 2003
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671203 | Nonvolatile semiconductor memory having page mode with a plurality of banks | Toru Tanzawa, Shigeru Atsumi, Akira Umezawa, Hitoshi Shiga, Yoshinori Takano | 2003-12-30 |
| 6643183 | Channel-erase nonvolatile semiconductor memory device | Shigeru Atsumi, Toru Tanzawa | 2003-11-04 |
| 6639837 | Non-volatile semiconductor memory device | Yoshinori Takano, Toru Tanzawa | 2003-10-28 |
| 6636441 | Semiconductor memory device including non-volatile memory cell array having MOS structure in well region formed on semiconductor substrate | — | 2003-10-21 |
| 6577538 | Channel-erase nonvolatile semiconductor memory device | Shigeru Atsumi, Toru Tanzawa | 2003-06-10 |
| 6535427 | Nonvolatile semiconductor memory device with initialization circuit and control method thereof | Yoshinori Takano, Toru Tanzawa | 2003-03-18 |
| 6510089 | Voltage-level shifter and semiconductor memory using the same | Shigeru Atsumi | 2003-01-21 |