Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883986 | High density semiconductor circuit using CMOS transistors | Hideharu Egawa | 1989-11-28 |
| 4870615 | Nonvolatile floating gate semiconductor memory device | Tadashi Maruyama, Yukio Wada, Tomohisa Shigematsu, Makoto Yoshizawa | 1989-09-26 |