Issued Patents 2002
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487120 | Boosted voltage generating circuit and semiconductor memory device having the same | Takeshi Miyaba, Shigeru Atsumi | 2002-11-26 |
| 6456541 | Booster circuit for raising voltage by sequentially transferring charges from input terminals of booster units to output terminals thereof in response to clock signals having different phases | — | 2002-09-24 |
| 6445618 | Channel-erase nonvolatile semiconductor memory device | Shigeru Atsumi, Tadayuki Taura | 2002-09-03 |
| 6442080 | Nonvolatile semiconductor memory | Tadayuki Taura, Masao Kuriyama | 2002-08-27 |
| 6438034 | Semiconductor device | — | 2002-08-20 |
| 6434054 | Non-volatile semiconductor memory device controlling the range of distribution of memory cell threshold voltages | Hitoshi Shiga, Masanobu Saito | 2002-08-13 |
| 6429725 | Pump circuit with active-mode and stand-by mode booster circuits | Shigeru Atsumi | 2002-08-06 |
| 6373749 | Channel-erase nonvolatile semiconductor memory device | Shigeru Atsumi, Tadayuki Taura | 2002-04-16 |
| 6363010 | Nonvolatile semiconductor memory device | Tomoharu Tanaka, Kazunori Ohuchi, Ken Takeuchi | 2002-03-26 |
| 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 | Hitoshi Shiga, Masanobu Saito | 2002-02-26 |
| 6344996 | Semiconductor memory device | Tomoharu Tanaka, Hiroshi Nakamura | 2002-02-05 |
| 6344764 | Semiconductor integrated circuit device | — | 2002-02-05 |
| 6337825 | Semiconductor memory device | Shigeru Atsumi | 2002-01-08 |