Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839865 | Selective application of voltages for testing storage cells in semiconductor memory arrangements | Katsuyuki Sato, Hiroshi Kawamoto | 1989-06-13 |
| 4807190 | Semiconductor integrated circuit device | Kyoko Ishii, Masaya Muranaka | 1989-02-21 |