Inventor

UMEZAWA AKIRA

JP53 patents

⚠️ This page may combine multiple inventors who share the name “UMEZAWA AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

UMEZAWA AKIRA

TOSHIBA KK

Semiconductor integrated circuit device

Semiconductor integrated circuit device

Data-erasable non-volatile semiconductor memory device

Booster circuit and semiconductor memory device having the same

Semiconductor integrated circuit device having a booster circuit and a storage device

Two-transistor flash memory device using replica cell array to control the precharge/discharge and sense amplifier circuits of the primary cell array

Semiconductor memory device with MOS transistors each having floating gate and control gate

Semiconductor memory device with MOS transistors, each including a floating gate and a control gate, and a memory card including the same

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

Nonvolatile semiconductor memory

Semiconductor integrated circuit device with operation/function setting information memory

Nonvolatile semiconductor memory having page mode with a plurality of banks

Latch type level shift circuit

Non-volatile semiconductor memory having column sub-selector layout pattern adaptable to miniaturization of memory cell

Semiconductor integrated circuit device and storage device

Semiconductor memory device

Non-volatile semiconductor memory device and data erasing method therefor

Semiconductor integrated circuit device with a stacked gate including a floating gate and a control gate

Semiconductor integrated circuit device provided with a differential amplifier

Nonvolatile semiconductor memory device including MOS transistors each having a floating gate and control gate

Semiconductor integrated circuit device with a stacked gate including a floating gate and a control gate

Semiconductor device including MOS transistors having floating gate and control gate

Semiconductor memory device with MOS transistors each having floating gate and control gate and method of controlling the same

Semiconductor memory device with MOS transistors, each including floating gate and control gate, and memory card including the same

Semiconductor memory device with MOS transistors each having floating gate and control gate

Nonvolatile semiconductor memory device with MOS transistors each having a floating gate and a control gate

Semiconductor memory device including MOS transistor having a floating gate and a control gate

Semiconductor memory device with MOS transistors each having floating gate and control gate

Semiconductor memory device including floating gates and control gates, control method for the same, and memory card including the same

Semiconductor integrated circuit device with erasable and programmable fuse memory

Non-volatile semiconductor memory device

Channel erase type nonvolatile semiconductor memory device and electronic card and electronic apparatus using the device

Semiconductor integrated circuit device

Booster circuit and semiconductor memory device having the same

Semiconductor memory device with a stacked gate including a floating gate and a control gate

Semiconductor memory device with a stacked gate including a floating gate and a control gate

Method of controlling a semiconductor device by a comparison of times for discharge of bit lines connected to different memory cell arrays

Semiconductor memory device comprising plural source lines

Nonvolatile semiconductor memory device

Semiconductor memory device including MOS transistors each having a floating gate and a control gate

Semiconductor memory device with MOS transistors, each having a floating gate and a control gate, and memory card including the same

Channel erase type nonvolatile semiconductor memory device and electronic card and electronic apparatus using the device

Nonvolatile semiconductor memory having page mode with a plurality of banks

Non-volatile semiconductor memory device

UMEZAWA AKIRA

Semiconductor storage device with a well control circuit

Power circuit including step-up circuit and stabilizing method thereof

(unassigned)

Semiconductor circuit

TOSHIBA MEMORY CORP

Memory device

KIOXIA CORP

Memory device

KASAI TAKAMICHI

Nonvolatile semiconductor storage device with multiple well regions and a shared bit line