Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882507 | Output circuit of semiconductor integrated circuit device | Yuuichi Tatsumi, Hiroshi Iwahashi, Masamichi Asano, Mizuho Imai | 1989-11-21 |
| 4858192 | Semiconductor memory device with redundancy circuit | Yuuichi Tatsumi, Hiroshi Iwahashi, Masamichi Asano, Mizuho Imai | 1989-08-15 |