Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825098 | Bidirectional semiconductor device having only one one-directional device | — | 1989-04-25 |
| 4823321 | Dual port type semiconductor memory device realizing a high speed read operation | — | 1989-04-18 |
| 4809046 | Semiconductor memory device | Takahiko Yamauchi, Teruo Seki | 1989-02-28 |