AU

Akira Umezawa

KT Kabushiki Kaisha Toshiba: 50 patents #337 of 21,451Top 2%
Kioxia: 1 patents #1,054 of 1,813Top 60%
Toshiba Memory: 1 patents #1,210 of 1,971Top 65%
Overall (All Time): #49,205 of 4,157,543Top 2%
53
Patents All Time

Issued Patents All Time

Showing 26–50 of 53 patents

Patent #TitleCo-InventorsDate
7180789 Semiconductor memory device with MOS transistors, each having a floating gate and a control gate, and memory card including the same 2007-02-20
7120053 Semiconductor intergrated circuit device with a main cell array and a fuse cell array whose word lines and bit lines are extended in the same directions Shigeru Atsumi, Masao Kuriyama, Hironori Banba, Tadayuki Taura, Hidetoshi Saito 2006-10-10
7120057 Semiconductor memory device with a stacked gate including a floating gate and a control gate Kazuhiko Kakizoe 2006-10-10
7099191 Channel erase type nonvolatile semiconductor memory device and electronic card and electronic apparatus using the device 2006-08-29
6961268 Nonvolatile semiconductor memory device with MOS transistors each having a floating gate and a control gate 2005-11-01
6943402 Nonvolatile semiconductor memory device including MOS transistors each having a floating gate and control gate Shigeru Nagasaka, Fumitaka Arai 2005-09-13
6940754 Channel erase type nonvolatile semiconductor memory device and electronic card and electronic apparatus using the device 2005-09-06
6940762 Semiconductor memory device including MOS transistor having a floating gate and a control gate 2005-09-06
6856543 Semiconductor integrated circuit device with erasable and programmable fuse memory Shigeru Atsumi, Masao Kuriyama, Hironori Banba, Tadayuki Taura, Hidetoshi Saito 2005-02-15
6816421 Nonvolatile semiconductor memory Toru Tanzawa 2004-11-09
6795352 Nonvolatile semiconductor memory having page mode with a plurality of banks Toru Tanzawa, Shigeru Atsumi, Tadayuki Taura, Hitoshi Shiga, Yoshinori Takano 2004-09-21
6700817 Semiconductor integrated circuit device with operation/function setting information memory Shigeru Atsumi, Masao Kuriyama, Hironori Banba, Tadayuki Taura, Hidetoshi Saito 2004-03-02
6671203 Nonvolatile semiconductor memory having page mode with a plurality of banks Toru Tanzawa, Shigeru Atsumi, Tadayuki Taura, Hitoshi Shiga, Yoshinori Takano 2003-12-30
6480426 Semiconductor integrated circuit device Shigeru Atsumi, Masao Kuriyama, Hironori Banba, Tadayuki Taura, Hidetoshi Saito 2002-11-12
6333662 Latch type level shift circuit Shigeru Atsumi 2001-12-25
6320428 Semiconductor integrated circuit device Shigeru Atsumi, Masao Kuriyama, Hironori Banba, Tadayuki Taura, Hidetoshi Saito 2001-11-20
6256227 Non-volatile semiconductor memory having column sub-selector layout pattern adaptable to miniaturization of memory cell Shigeru Atsumi, Toru Tanzawa, Seiji Yamada 2001-07-03
6226224 Semiconductor integrated circuit device and storage device Hironori Banba, Hitoshi Shiga, Shigeru Atsumi 2001-05-01
6222774 Data-erasable non-volatile semiconductor memory device Toru Tanzawa, Tadayuki Taura, Shigeru Atsumi 2001-04-24
6195307 Booster circuit and semiconductor memory device having the same Shigeru Atsumi, Hironori Banba 2001-02-27
6111456 Semiconductor circuit Hidetoshi Saito, Shigeru Atsumi 2000-08-29
6108246 Semiconductor memory device Hitoshi Shiga, Hironori Banba, Shigeru Atsumi 2000-08-22
6052313 Semiconductor integrated circuit device Shigeru Atsumi, Masao Kuriyama, Hironori Banba, Tadayuki Taura, Hidetoshi Saito 2000-04-18
6041012 Semiconductor integrated circuit device having a booster circuit and a storage device Hironori Banba, Hitoshi Shiga, Shigeru Atsumi 2000-03-21
6041011 Booster circuit and semiconductor memory device having the same Shigeru Atsumi, Hironori Banba 2000-03-21