Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889828 | Process for the production of electrical isolation zones in a CMOS integrated circuit | — | 1989-12-26 |
| 4882291 | Process for the production of electrical isolation zones in a CMOS integrated circuit | — | 1989-11-21 |
| 4851365 | Process for the production of a memory cell | — | 1989-07-25 |
| 4849369 | Method of making an EPROM memory cell | Michel Heitzmann | 1989-07-18 |