Issued Patents All Time
Showing 101–116 of 116 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4999813 | Nonvolatile semiconductor memory having a stress test circuit | Nobuaki Ohtsuka, Shigeru Atsumi | 1991-03-12 |
| 4974206 | Nonvolatile semiconductor memory device having reference potential generating circuit | Yumiko Iyama, Nobuaki Ohtsuka, Sumio Tanaka | 1990-11-27 |
| 4970691 | 2-cell/1-bit type EPROM | Shigeru Atsumi, Sumio Tanaka | 1990-11-13 |
| 4951257 | Reference setting circuit for determining written-in content in nonvolatile semiconductor memories | Keniti Imamiya, Sumio Tanaka, Shigeru Atsumi, Yumiko Iyama, Nobuaki Ohtsuka | 1990-08-21 |
| 4943962 | Nonvolatile semiconductor memory having page mode programming function | Keniti Imamiya, Sumio Tanaka, Shigeru Atsumi, Nobuaki Ohtsuka, Shinji Saito | 1990-07-24 |
| 4905194 | Semiconductor memory device with a circuit for analyzing defects in word-lines | Nobuaki Ohtsuka | 1990-02-27 |
| 4868621 | Input protection circuit | — | 1989-09-19 |
| 4694427 | Programmable semiconductor memory device with combined sense amplification and programming capability | Jun Tsujimoto | 1987-09-15 |
| 4680735 | Semiconductor memory device | Jun Tsujimoto | 1987-07-14 |
| 4658159 | Sense amplifier circuit for semiconductor memory device | — | 1987-04-14 |
| 4642673 | Floating gate type EEPROM with a substrate region used for the control gate | Tetsuya Iizuka | 1987-02-10 |
| 4616143 | High voltage bootstrapping buffer circuit | — | 1986-10-07 |
| 4616342 | Semiconductor memory device | — | 1986-10-07 |
| 4604533 | Sense amplifier | Shinji Saito | 1986-08-05 |
| 4489402 | Semiconductor memory device | Shinji Saitoh, Kazuaki Ichinose | 1984-12-18 |
| 4424578 | Bipolar prom | — | 1984-01-03 |