Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6535425 | Nonvolatile semiconductor memory device | Masaru Nawaki, Toshiji Ishii | 2003-03-18 |
| 6075739 | Semiconductor storage device performing self-refresh operation in an optimal cycle | — | 2000-06-13 |
| 5689468 | Semiconductor memory device and method for driving the same | — | 1997-11-18 |
| 5576987 | Semiconductor memory device | Toshio Mimoto | 1996-11-19 |
| 5517446 | Nonvolatile semiconductor memory device and method for driving the same | — | 1996-05-14 |
| 5469392 | Semiconductor memory | — | 1995-11-21 |
| 5432742 | System memory and a microcomputer comprising the same | Toshio Mimoto, Yukihiro Yoshida | 1995-07-11 |
| 5414661 | Semiconductor memory device | — | 1995-05-09 |
| 5410278 | Ring oscillator having a variable oscillating frequency | Nobuhiko Itoh | 1995-04-25 |
| 5406516 | Semiconductor memory device | Toshio Mimoto | 1995-04-11 |
| 5388076 | Semiconductor memory device | — | 1995-02-07 |
| 5329169 | Voltage dropping circuit for semiconductor device | — | 1994-07-12 |
| 5300823 | Internal voltage dropping circuit for semiconductor device | — | 1994-04-05 |
| 5293338 | Peripheral circuit in a dynamic semiconductor memory device enabling a time-saving and energy-saving data readout | — | 1994-03-08 |
| 5289424 | Pseudo-static random access memory | Nobuhiko Ito | 1994-02-22 |
| 5227999 | Semiconductor memory device capable of replacing faulty bit lines with redundant bit lines | Kazuaki Ochiai | 1993-07-13 |
| 5212665 | Internal address determining device for semiconductor memory devices | — | 1993-05-18 |
| 5175451 | Biasing circuit for sense amplifier | — | 1992-12-29 |
| 5170072 | Buffer device having a booster circuit for a semiconductor memory device | — | 1992-12-08 |
| 5030859 | Drive device for a CMOS sense amplifier in a dynamic semiconductor memory device | — | 1991-07-09 |
| 4320002 | Filter device | — | 1982-03-16 |