Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5892715 | Non-volatile semiconductor memory device with variable source voltage | Masayoshi Hirata | 1999-04-06 |
| 5798547 | Non-volatile semiconductor memory device having NAND structure cells | — | 1998-08-25 |
| 5732019 | Initialization of electrically erasable non-volatile semiconductor memory device | — | 1998-03-24 |
| 5684747 | Method for erasing nonvolatile semiconductor memory device incorporating redundancy memory cells | — | 1997-11-04 |
| 5484742 | Process for preparing a semiconductor device with a narrow-channel MOS transistor | — | 1996-01-16 |
| 5396499 | Semiconductor memory device with redundant memory and floatable data line | — | 1995-03-07 |
| 5347486 | Nonvolatile memory device having self-refresh function | — | 1994-09-13 |
| 5018104 | Redundant circuit incorporated in semiconductor memory device | — | 1991-05-21 |
| 4954729 | Output buffer circuit used for stable voltage source | — | 1990-09-04 |
| 4908798 | Semiconductor memory device with memory cell arrays and a redundant memory cell array associated with a small number of write-in and sense amplifying circuits | — | 1990-03-13 |
| 4905197 | Semiconductor memory having circuitry for discharging a digit line before verifying operation | — | 1990-02-27 |
| 4881200 | Erasable programmable read only memory device | — | 1989-11-14 |
| 4855956 | Semiconductor memory device with improved cell arrangement | — | 1989-08-08 |