Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868418 | Comparator circuit using resonant-tunneling transistor | Kenichi Imamura | 1989-09-19 |
| 4803535 | Dynamic random access memory trench capacitor | — | 1989-02-07 |
| 4801989 | Dynamic random access memory having trench capacitor with polysilicon lined lower electrode | — | 1989-01-31 |