Issued Patents All Time
Showing 76–97 of 97 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5808338 | Nonvolatile semiconductor memory | — | 1998-09-15 |
| 5748530 | Non-voltile memory device, non-volatile memory cell and method of adjusting the threshold value of the non-volatile memory cell and each of plural transistors | Toshifumi Asakawa | 1998-05-05 |
| 5747854 | Semiconductor device and manufacturing method thereof | — | 1998-05-05 |
| 5729494 | Non-volatile memory with floating gate type cell transistors and method for adjusting threshold valves of these transistors | Toshifumi Asakawa | 1998-03-17 |
| 5661686 | Nonvolatile semiconductor memory | — | 1997-08-26 |
| 5623442 | Memory cells and memory devices with a storage capacitor of parasitic capacitance and information storing method using the same | Mamoru Kondo, Hirofumi Abe | 1997-04-22 |
| 5623444 | Electrically-erasable ROM with pulse-driven memory cell transistors | Toshifumi Asakawa | 1997-04-22 |
| 5615146 | Nonvolatile memory with write data latch | — | 1997-03-25 |
| 5602779 | Nonvolatile multivalue memory | — | 1997-02-11 |
| 5372964 | Method of producing pillar-shaped DRAM and ROM devices | — | 1994-12-13 |
| 5308776 | Method of manufacturing SOI semiconductor device | — | 1994-05-03 |
| 5308999 | MOS FET having a thin film SOI structure | — | 1994-05-03 |
| 5264721 | Insulated-gate FET on an SOI-structure | — | 1993-11-23 |
| 5196365 | Method of making semiconductor memory device having stacked capacitor | — | 1993-03-23 |
| 5126810 | Semiconductor memory device having stacked capacitor | — | 1992-06-30 |
| 5120666 | Manufacturing method for semiconductor device | — | 1992-06-09 |
| 5095351 | Semiconductor device having bipolar transistor and method of producing the same | — | 1992-03-10 |
| 5057896 | Semiconductor device and method of producing same | — | 1991-10-15 |
| 5051952 | Semiconductor memory device having capacitors through which data read/write is carried out | — | 1991-09-24 |
| 5001526 | Dram cell formed on an insulating layer having a buried semiconductor pillar structure and a manufacturing method thereof | — | 1991-03-19 |
| 4987470 | Semiconductor dram device having a trench | Takaaki Suzuki | 1991-01-22 |
| 4983538 | Method for fabricating a silicon carbide substrate | — | 1991-01-08 |