Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720606 | Dynamic semiconductor memory device having a trench capacitor | Katsuhiko Hieda, Shigeru Ishibashi, Yusuke Kohyama | 2004-04-13 |
| 6707706 | Semiconductor memory device and method for manufacturing the same | Katsuhiko Hieda | 2004-03-16 |