Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6118699 | Semiconductor memory device using MONOS type nonvolatile memory cell | Yuuichi Tatsumi, Noriaki Suzuki, Kazuhiko Satou, Hitoshi Ohta | 2000-09-12 |
| 5175704 | Nonvolatile semiconductor memory device | Yuuichi Tatsumi, Hiroshi Iwahashi, Masamichi Asano, Hiroto Nakai, Mizuho Imai | 1992-12-29 |
| 5138579 | Semiconductor memory device having transfer gates which prevent high voltages from being applied to memory and dummy cells in the reading operation | Yuuichi Tatsumi, Hiroshi Iwahashi, Masamichi Asano, Mizuho Imai | 1992-08-11 |
| 5010520 | Nonvolatile semiconductor memory device with stabilized data write characteristic | Yuuichi Tatsumi, Hiroshi Iwahashi, Masamichi Asano, Hiroto Nakai, Mizuho Imai | 1991-04-23 |
| 4967394 | Semiconductor memory device having a test cell array | Yuuichi Tatsumi, Hiroshi Iwahashi, Masamichi Asano, Mizuho Imai | 1990-10-30 |
| 4916334 | High voltage booster circuit for use in EEPROMs | Yuuichi Tatsumi, Hiroshi Iwahashi, Masamichi Asano, Mizuho Imai | 1990-04-10 |
| 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 |
| 4697101 | Read/write control circuit | Hiroshi Iwahashi, Masamichi Asano, Masaki Momodomi, Kazuto Suzuki, Akira Narita | 1987-09-29 |
| 4611301 | Read only memory | Hiroshi Iwahashi, Masamichi Asano | 1986-09-09 |