Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677556 | Semiconductor device having inversion inducing gate | — | 1997-10-14 |
| 5602789 | Electrically erasable and programmable non-volatile and multi-level memory systemn with write-verify controller | Riichiro Shirota, Kazunori Ohuchi, Ryouhei Kirisawa, Seiichi Aritome, Tomoharu Tanaka +1 more | 1997-02-11 |
| 5597748 | Method of manufacturing NAND type EEPROM | Masamichi Asano, Hiroshi Iwahashi, Ryouhei Kirisawa, Ryozo Nakayama, Satoshi Inoue +2 more | 1997-01-28 |
| 5596523 | Electrically erasable programmable read-only memory with an array of one-transistor memory cells | Riichiro Shirota | 1997-01-21 |