Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6172912 | Programming method for a nonvolatile semiconductor memory | Yoshiji Ohta | 2001-01-09 |
| 6164224 | Buttonhole darning sewing machine | Mitsuhiro Tachikawa, Kazuaki Ishii, Takashi Tsukioka, Toshiaki Kasuga, Tsuguo Kubota | 2000-12-26 |
| 6160735 | Negative voltage level shifter circuit and nonviolatile semiconductor storage device including the circuit | — | 2000-12-12 |
| 6134142 | Redundancy method and a device for a non-volatile semiconductor memory | — | 2000-10-17 |
| 6111785 | Nonvolatile semiconductor memory device capable of decreasing layout area for writing defective address | — | 2000-08-29 |
| 6072722 | Method of driving a nonvolatile semiconductor storage device | — | 2000-06-06 |
| 6067251 | Non-volatile semiconductor memory device | — | 2000-05-23 |
| 5910918 | Data writing circuit for a nonvolatile semiconductor memory | — | 1999-06-08 |
| 5848573 | Button hole sewing machine | Kazuaki Ishii, Mitsuhiro Tachikawa | 1998-12-15 |
| 5831905 | Method for controlling erasure of nonvolatile semiconductor memory | — | 1998-11-03 |
| 5652450 | Nonvolatile semiconductor storage device | — | 1997-07-29 |