Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888623 | Semiconductor device with PN junction isolation for TTL or ECL circuits | Hiromu Enomoto, Yasushi Yasuda, Yoshiki Shimauchi | 1989-12-19 |
| 4810908 | Semiconductor logic circuit comprising clock driver and clocked logic circuit | Hirokazu Suzuki, Shinji Saito | 1989-03-07 |