Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5631597 | Negative voltage circuit for a flash memory | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Ryoji Hagiwara, Yasushi Kasa +2 more | 1997-05-20 |
| 5608670 | Flash memory with improved erasability and its circuitry | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Ryoji Hagiwara, Yasushi Kasa +2 more | 1997-03-04 |
| 5592419 | Flash memory with improved erasability and its circuitry | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Ryoji Hagiwara, Yasushi Kasa +2 more | 1997-01-07 |