Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873203 | Method for formation of insulation film on silicon buried in trench | Toru Kaga, Tokuo Kure, Yoshifumi Kawamoto, Hideo Sunami | 1989-10-10 |
| 4873560 | Dynamic random access memory having buried word lines | Hideo Sunami, Toru Kaga | 1989-10-10 |