Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858190 | Dual port semiconductor memory having random and serial access modes | Akirahiko Yoshida, Masami Nei, Masamichi Ishihara, Yukio Yamamoto | 1989-08-15 |
| 4819213 | Semiconductor memory | Masamichi Ishihara | 1989-04-04 |