Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5804505 | Method of producing semiconductor device having buried contact structure | Yoshiaki Yamada | 1998-09-08 |
| 5798544 | Semiconductor memory device having trench isolation regions and bit lines formed thereover | Shuichi Ohya, Masato Sakao, Yoshihiro Takaishi, Takeshi Akimoto, Shizuo Oguro +1 more | 1998-08-25 |