Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6434054 | Non-volatile semiconductor memory device controlling the range of distribution of memory cell threshold voltages | Toru Tanzawa, Masanobu Saito | 2002-08-13 |
| 6434080 | Semiconductor memory and method of controlling the same | — | 2002-08-13 |
| 6351417 | Non-volatile semiconductor memory device having a function for controlling the range of distribution of memory cell threshold voltages and method of erasing data thereof | Toru Tanzawa, Masanobu Saito | 2002-02-26 |
| 6240019 | Non-volatile semiconductor memory device having a function for controlling the range of distribution of memory cell threshold voltages | Toru Tanzawa, Masanobu Saito | 2001-05-29 |
| 6226224 | Semiconductor integrated circuit device and storage device | Hironori Banba, Shigeru Atsumi, Akira Umezawa | 2001-05-01 |
| 6108246 | Semiconductor memory device | Akira Umezawa, Hironori Banba, Shigeru Atsumi | 2000-08-22 |
| 6041012 | Semiconductor integrated circuit device having a booster circuit and a storage device | Hironori Banba, Shigeru Atsumi, Akira Umezawa | 2000-03-21 |