Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6314033 | Semiconductor memory device with redundancy circuit | Hiroyuki Sugamoto | 2001-11-06 |
| 6307801 | Trimming circuit for system integrated circuit | Eisaku Itoh, Yoshiyuki Ishida | 2001-10-23 |
| 6275431 | Semiconductor memory device having bit line precharge circuits activated by separate control signals and control method for the same | Kazumi Kojima | 2001-08-14 |
| 6269033 | Semiconductor memory device having redundancy unit for data line compensation | Yoshiyuki Ishida | 2001-07-31 |
| 6014329 | Flash-erasable semiconductor memory device having an improved reliability | Takao Akaogi, Tatsuya Kajita, Hisayoshi Watanabe, Minoru Yamashita | 2000-01-11 |
| 5910916 | Flash-erasable semiconductor memory device having improved reliability | Takao Akaogi, Tatsuya Kajita, Hisayoshi Watanabe, Minoru Yamashita | 1999-06-08 |
| 5870337 | Flash-erasable semiconductor memory device having an improved reliability | Takao Akaogi, Tatsuya Kajita, Hisayoshi Watanabe, Minoru Yamashita | 1999-02-09 |
| 5835416 | Flash-erasable semiconductor memory device having an improved reliability | Takao Akaogi, Tatsuya Kajita, Hisayoshi Watanabe, Minoru Yamashita | 1998-11-10 |
| 5835408 | Flash-erasable semiconductor memory device having an improved reliability | Takao Akaogi, Tatsuya Kajita, Hisayoshi Watanabe, Minoru Yamashita | 1998-11-10 |
| 5770963 | Flash memory with improved erasability and its circuitry | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Ryoji Hagiwara, Yasushi Kasa +2 more | 1998-06-23 |
| 5761127 | Flash-erasable semiconductor memory device having an improved reliability | Takao Akaogi, Tatsuya Kajita, Hisayoshi Watanabe, Minoru Yamashita | 1998-06-02 |
| 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, Yasushi Kasa, Shouichi Kawamura | 1996-12-31 |
| 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, Yasushi Kasa, Shouichi Kawamura | 1996-11-05 |
| 5519652 | Nonvolatile semiconductor memory for positively holding stored data | Sinsuke Kumakura, Takao Akaogi, Tetsuya Chida | 1996-05-21 |
| 5490107 | Nonvolatile semiconductor memory | Takao Akaogi, Masanobu Yoshida, Yasushi Kasa, Shouichi Kawamura | 1996-02-06 |
| 5487036 | Nonvolatile semiconductor memory | Takao Akaogi, Masanobu Yoshida, Yasushi Kasa, Shouichi Kawamura | 1996-01-23 |