Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6178122 | Boosted-voltage drive circuit operable with high reliability and semiconductor memory device employing the same | Shigeki Tomishima, Tsukasa Ooishi | 2001-01-23 |
| 6163488 | Semiconductor device with antifuse | Hiroaki Tanizaki, Shigeki Tomishima | 2000-12-19 |
| 6067260 | Synchronous semiconductor memory device having redundant circuit of high repair efficiency and allowing high speed access | Tsukasa Ooishi, Shigeki Tomishima | 2000-05-23 |
| 6058053 | Semiconductor memory device capable of high speed operation and including redundant cells | Takaharu Tsuji, Tsukasa Ooishi, Hiroshi Kato, Shigeki Tomishima | 2000-05-02 |
| 5268321 | Method of making DRAM cell having improved radiation protection | Masahiro Shimizu, Masahide Inuishi, Katsuhiro Tsukamoto | 1993-12-07 |
| 5249215 | X-ray exposure system with curved reflecting mirrors | — | 1993-09-28 |
| 5164806 | Element isolating structure of semiconductor device suitable for high density integration | Masao Nagatomo, Tomonori Okudaira, Yoshinori Okumura | 1992-11-17 |
| 5023682 | Semiconductor memory device | Masahiro Shimizu, Masahide Inuishi, Katsuhiro Tsukamoto | 1991-06-11 |
| 4702797 | Method of manufacturing semiconductor memory device | Masahiro Shimizu, Katsuhiro Tsukamoto, Masahide Inuishi | 1987-10-27 |