Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870609 | High speed full adder using complementary input-output signals | Ikuo Yasui, Toru Kengaku | 1989-09-26 |
| 4813019 | Semiconductor integrated circuit | Narumi Sakashita | 1989-03-14 |