Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7227780 | Semiconductor device and control method thereof | Hideki Komori, Masanori Taya | 2007-06-05 |
| 7102928 | Semiconductor memory apparatus | — | 2006-09-05 |
| 6611464 | Nonvolatile semiconductor memory device having electrically and collectively erasable characteristics | Takao Akaogi, Nobuaki Takashina, Yasushi Kasa, Kiyoshi Itano, Hiromi Kawashima +1 more | 2003-08-26 |
| 6288945 | Nonvolatile semiconductor memory device having electrically and collectively erasable characteristics | Hiromi Kawashima | 2001-09-11 |
| 5815440 | Semiconductor memory device with electrically controllable threshold voltage | Takao Akaogi, Nobuaki Takashina, Yasushi Kasa, Kiyoshi Itano, Hiromi Kawashima +1 more | 1998-09-29 |
| 5770963 | Flash memory with improved erasability and its circuitry | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Ryoji Hagiwara, Yasushi Kasa +2 more | 1998-06-23 |
| 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 |
| 5590074 | Nonvolatile semiconductor memory | Takao Akaogi, Masanobu Yoshida, Yasushige Ogawa, Yasushi Kasa | 1996-12-31 |
| 5581107 | Nonvolatile semiconductor memory that eases the dielectric strength requirements | Nobuaki Takashina, Yasushi Kasa, Kiyoshi Itano | 1996-12-03 |
| 5576637 | XOR CMOS logic gate | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Ryoji Hagiwara, Yasushi Kasa +2 more | 1996-11-19 |
| 5572463 | Nonvolatile semiconductor memory with pre-read means | Takao Akaogi, Masanobu Yoshida, Yasushige Ogawa, Yasushi Kasa | 1996-11-05 |
| 5537356 | Nonvolatile semiconductor memory | Takao Akaogi, Masanobu Yoshida, Yasushige Oqawa, Yasushi Kasa | 1996-07-16 |
| 5490107 | Nonvolatile semiconductor memory | Takao Akaogi, Masanobu Yoshida, Yasushige Ogawa, Yasushi Kasa | 1996-02-06 |
| 5487036 | Nonvolatile semiconductor memory | Takao Akaogi, Masanobu Yoshida, Yasushige Ogawa, Yasushi Kasa | 1996-01-23 |
| 5485424 | Semiconductor memory and redundant-address writing method | — | 1996-01-16 |
| 5406524 | Nonvolatile semiconductor memory that eases the dielectric strength requirements | Nobuaki Takashina, Yasushi Kasa, Kiyoshi Itano | 1995-04-11 |