Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877750 | Method of fabricating a trench capacitor cell for a semiconductor memory device | — | 1989-10-31 |
YO
Yoshinori Okumura
Overall (1989): #40,455 of 140,708Top 30%
1
Patents 1989