Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835741 | Frasable electrically programmable read only memory cell using a three dimensional trench floating gate | — | 1989-05-30 |
| 4830981 | Trench capacitor process for high density dynamic ram | Ronald N. Parker | 1989-05-16 |
| 4796228 | Erasable electrically programmable read only memory cell using trench edge tunnelling | — | 1989-01-03 |