Issued Patents All Time
Showing 51–75 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6535427 | Nonvolatile semiconductor memory device with initialization circuit and control method thereof | Yoshinori Takano, Toru Tanzawa | 2003-03-18 |
| 6510089 | Voltage-level shifter and semiconductor memory using the same | Shigeru Atsumi | 2003-01-21 |
| 6496413 | Semiconductor memory device for effecting erasing operation in block unit | Shigeru Atsumi | 2002-12-17 |
| 6480426 | Semiconductor integrated circuit device | Shigeru Atsumi, Masao Kuriyama, Akira Umezawa, Hironori Banba, Hidetoshi Saito | 2002-11-12 |
| 6445618 | Channel-erase nonvolatile semiconductor memory device | Shigeru Atsumi, Toru Tanzawa | 2002-09-03 |
| 6442080 | Nonvolatile semiconductor memory | Toru Tanzawa, Masao Kuriyama | 2002-08-27 |
| 6442082 | Voltage-level shifter and semiconductor memory using the same | Shigeru Atsumi | 2002-08-27 |
| 6373749 | Channel-erase nonvolatile semiconductor memory device | Shigeru Atsumi, Toru Tanzawa | 2002-04-16 |
| 6327180 | Semiconductor memory device for effecting erasing operation in block unit | Shigeru Atsumi | 2001-12-04 |
| 6320428 | Semiconductor integrated circuit device | Shigeru Atsumi, Masao Kuriyama, Akira Umezawa, Hironori Banba, Hidetoshi Saito | 2001-11-20 |
| 6262916 | Non-volatile semiconductor memory device capable of pre-conditioning memory cells prior to a data erasure | Masao Kuriyama, Hidetoshi Saito | 2001-07-17 |
| 6236609 | Nonvolatile semiconductor memory | Toru Tanzawa, Masao Kuriyama | 2001-05-22 |
| 6222774 | Data-erasable non-volatile semiconductor memory device | Toru Tanzawa, Akira Umezawa, Shigeru Atsumi | 2001-04-24 |
| 6078525 | Non-volatile semiconductor memory device capable of pre-conditioning memory cells prior to a data erasure | Masao Kuriyama, Hidetoshi Saito | 2000-06-20 |
| 6052313 | Semiconductor integrated circuit device | Shigeru Atsumi, Masao Kuriyama, Akira Umezawa, Hironori Banba, Hidetoshi Saito | 2000-04-18 |
| 5986940 | Semiconductor integrated circuit device with a constant current source | Shigeru Atsumi | 1999-11-16 |
| 5963500 | Semiconductor memory device | Shigeru Atsumi, Hironori Banba | 1999-10-05 |
| 5909406 | Semiconductor memory device | Shigeru Atsumi, Akira Umezawa | 1999-06-01 |
| 5815449 | Semiconductor memory device | — | 1998-09-29 |
| 5805510 | Data erase mechanism for nonvolatile memory of boot block type | Tadashi Miyakawa, Hidetoshi Saito, Masao Kuriyama | 1998-09-08 |
| 5483494 | Nonvolatile semiconductor memory device having a reduced delay in reading data after changing from standby to an operation mode | — | 1996-01-09 |
| 5364805 | Method of manufacturing an EEPROM having an erasing gate electrode | Masamichi Asano, Kazunori Kanebako, Hiroshi Iwahashi | 1994-11-15 |
| 5210048 | Nonvolatile semiconductor memory device with offset transistor and method for manufacturing the same | Atsushi Shoji, Masamichi Asano, Tadashi Miyakawa, Michiharu Inami | 1993-05-11 |
| 5153684 | Nonvolatile semiconductor memory device with offset transistor | Atsushi Shoji, Masamichi Asano, Tadashi Miyakawa, Michiharu Inami | 1992-10-06 |
| 5053841 | Nonvolatile semiconductor memory | Tadashi Miyakawa, Masamichi Asano, Atsushi Shoji, Michiharu Inami | 1991-10-01 |