Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4956816 | Non-volatile semiconductor memory having improved testing circuitry | Shigeru Atsumi, Shinji Saito, Nobuaki Otsuka | 1990-09-11 |
| 4951257 | Reference setting circuit for determining written-in content in nonvolatile semiconductor memories | Keniti Imamiya, Junichi Miyamoto, Shigeru Atsumi, Yumiko Iyama, Nobuaki Ohtsuka | 1990-08-21 |
| 4943962 | Nonvolatile semiconductor memory having page mode programming function | Keniti Imamiya, Junichi Miyamoto, Shigeru Atsumi, Nobuaki Ohtsuka, Shinji Saito | 1990-07-24 |
| 4926070 | Voltage level converting circuit | Shigeru Atsumi | 1990-05-15 |
| 4916665 | Semiconductor memory device with P-channel MOS transistor load circuit | Shigeru Atsumi | 1990-04-10 |
| 4912534 | Nonvolatile semiconductor memory device | Shigeru Atsumi, Kenji Shibata, Koichi Kanzaki | 1990-03-27 |
| 4897815 | High-speed write type nonvolatile semiconductor memory | Shinji Saito, Shigeru Atsumi, Nobuaki Ohtsuka | 1990-01-30 |
| 4893275 | High voltage switching circuit in a nonvolatile memory | Shigeru Atsumi, Nobuaki Ohtsuka, Keniti Imamiya | 1990-01-09 |
| 4884241 | Nonvolatile semiconductor memory device | Shigeru Atsumi, Shinji Saito | 1989-11-28 |
| 4879689 | Nonvolatile semiconductor memory device | Shigeru Atsumi, Shinji Saito, Nobauki Otsuka | 1989-11-07 |
| 4860260 | Semiconductor memory device with testing of redundant memory cells | Shinji Saito, Shigeru Atsumi | 1989-08-22 |
| 4843594 | Nonvolatile semiconductor memory device with a bias circuit | Shigeru Atsumi | 1989-06-27 |
| 4825271 | Nonvolatile semiconductor memory | Masaki Sato, Shinji Saito, Shigeru Atsumi, Nobuaki Ohtsuka | 1989-04-25 |
| 4788663 | Nonvolatile semiconductor memory device with a lightly-doped drain structure | Shinji Saito, Shigeru Atsumi, Nobuaki Ohtsuka | 1988-11-29 |
| 4694429 | Semiconductor memory device | Shinji Saito, Shigeru Atsumi, Nobuaki Ohtsuka | 1987-09-15 |
| 4692902 | Semiconductor read only memory device with improved access time | Shinji Saito, Shigeru Atsumi | 1987-09-08 |
| 4636879 | VTR system | Fujiaki Narita | 1987-01-13 |
| 4574273 | Circuit for changing the voltage level of binary signals | Shigeru Atsumi | 1986-03-04 |
| 4531202 | Semiconductor nonvolatile read only memory device | Shigeyoshi Watanabe | 1985-07-23 |
| 4494219 | Nonvolatile read only memory device | Shigeyoshi Watanabe | 1985-01-15 |
| 4467225 | Address selection device | — | 1984-08-21 |
| 4453174 | Semiconductor integrated circuit device with non-volatile semiconductor memory cells and means for relieving stress therein | Yuichi Kawasaki, Hiroshi Iwahashi, Masamichi Asano, Shinichi Maekawa, Masazi Mito | 1984-06-05 |