Inventor

KIRISAWA RYOUHEI

JP74 patents

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

KIRISAWA RYOUHEI

TOSHIBA KK

Nonvolatile semiconductor memory device

Electrically erasable and programmable non-volatile and multi-level memory systemn with write-verify controller

Electrically erasable and programmable non-volatile memory system with write-verify controller using two reference levels

Electrically erasable and programmable non-volatile memory system with write-verify controller using two reference levels

Electrically erasable and programmable non-volatile memory system with write-verify controller using two reference levels

Electrically erasable programmable read-only memory with NAND cell structure

Electrically erasable programmable read-only memory with NAND cell structure that suppresses memory cell threshold voltage variation

Electrically erasable programmable read-only memory with NAND cell structure

Semiconductor memory device

Electrically erasable programmable read-only memory with electric field decreasing controller

Electrically erasable programmable read-only memory with electric field decreasing controller

Electrically erasable programmable read-only memory with NAND cellstructure

Nonvolatile semiconductor memory device and method for manufacturing same

Nonvolatile semiconductor memory device and method for producing same

Electrically erasable programmable read-only memory with electric field decreasing controller

Nonvolatile semiconductor memory device

Non-volatile semiconductor memory device with nand type memory cell arrays

Non-volatile semiconductor memory and method of manufacturing the same

Nonvolatile semiconductor memory device having a small number of internal boosting circuits

Non-volatile semiconductor memory with NAND cell structure and switching transistors with different channel lengths to reduce punch-through

Non-volatile semiconductor memory NAND structure with differently doped channel stoppers

Non-volatile semiconductor memory and method of manufacturing the same

Non-volatile semiconductor memory device with voltage stabilizing electrode

Nonvolatile semiconductor memory device and method for manufacturing same

Nonvolatile semiconductor memory device and method for manufacturing same

Three dimensional nonvolatile semiconductor memory having pillars provided inside an oblate through hole

Nonvolatile semiconductor memory device

Method for manufacturing nonvolatile semiconductor memory device and nonvolatile semiconductor memory device

Method of manufacturing NAND type EEPROM

Nonvolatile semiconductor memory device including floating gate electrodes formed between control gate electrodes and vertically formed along a semiconductor pillar

Method for operating semiconductor memory device

TANAKA HIROYASU

Non-volatile semiconductor stacked memory device having two semiconductor pillars in a through hole and method for manufacturing same

Nonvolatile semiconductor memory device and method for manufacturing same

FUKUZUMI YOSHIAKI

Nonvolatile semiconductor memory device and method for manufacturing same

Nonvolatile semiconductor memory device

KIDOH MASARU

Nonvolatile semiconductor memory device and method for manufacturing same

Nonvolatile semiconductor memory device and method of manufacturing the same

KIOXIA CORP

Nonvolatile semiconductor memory device and method for manufacturing same

Nonvolatile semiconductor memory device and method for manufacturing same

TOSHIBA MEMORY CORP

Nonvolatile semiconductor memory device and method for manufacturing same

Nonvolatile semiconductor memory device and method for manufacturing same

KATSUMATA RYOTA

Nonvolatile semiconductor memory device and method for driving same

Nonvolatile semiconductor memory device and method for driving same

FUJIWARA TOMOKO

Nonvolatile semiconductor memory device and method for manufacturing same

HISHIDA TOMOO

Nonvolatile semiconductor memory device

OOTA SHIGETO

Nonvolatile semiconductor memory device

IMAMURA TAKESHI

Semiconductor storage device and manufacturing method of semiconductor storage device

KIRISAWA RYOUHEI

Nonvolatile semiconductor memory device

MIKAJIRI YOSHIMASA

Nonvolatile semiconductor memory device

KITO MASARU

Method for manufacturing a vertical nonvolatile semiconductor memory device including forming floating gates within the recesses created on the interlayer insulating films