Inventor
SAWA KEIICHI
JP29 patents
⚠️ This page may combine multiple inventors who share the name “SAWA KEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA MEMORY CORP
13 patentsUS9997533B2Jun 12, 2018
Semiconductor device and method for manufacturing same
TOSHIBA MEMORY CORP17 citations94
US11011532B2May 18, 2021
Floating gate nonvolatile semiconductor memory device
TOSHIBA MEMORY CORP4 citations83
US9978765B2May 22, 2018
Nonvolatile semiconductor memory device and method for manufacturing same
TOSHIBA MEMORY CORP5 citations83
US9892930B1Feb 13, 2018
Semiconductor memory device and method for manufacturing same
TOSHIBA MEMORY CORP12 citations82
US10396280B2Aug 27, 2019
Semiconductor memory device and manufacturing method for same
TOSHIBA MEMORY CORP2 citations73
US10910401B2Feb 2, 2021
Semiconductor device and method of manufacturing the same
TOSHIBA MEMORY CORP3 citations72
US10283646B2May 7, 2019
Nonvolatile semiconductor memory device and method for manufacturing the same
TOSHIBA MEMORY CORP5 citations71
US10964716B2Mar 30, 2021
Semiconductor device and method of manufacturing same
TOSHIBA MEMORY CORP1 citations62
US10522596B2Dec 31, 2019
Semiconductor storage device comprising resistance change film and method of manufacturing the same
TOSHIBA MEMORY CORP1 citations62
US10312255B2Jun 4, 2019
Semiconductor device and method for manufacturing same
TOSHIBA MEMORY CORP1 citations62
US10923487B2Feb 16, 2021
Semiconductor memory device
TOSHIBA MEMORY CORP0 citations52
US10777573B2Sep 15, 2020
Semiconductor device and method of manufacturing the same
TOSHIBA MEMORY CORP0 citations52
US10490563B2Nov 26, 2019
Nonvolatile semiconductor memory device having floating gate-type memory cells and method for manufacturing same
TOSHIBA MEMORY CORP0 citations51
KIOXIA CORP
13 patentsUS11349033B2May 31, 2022
Semiconductor device and semiconductor memory device
KIOXIA CORP3 citations72
US11974432B2Apr 30, 2024
Semiconductor storage device and method for manufacturing semiconductor storage device
KIOXIA CORP2 citations70
US12193226B2Jan 7, 2025
Nonvolatile semiconductor memory device and method for manufacturing same
KIOXIA CORP0 citations62
US11844219B2Dec 12, 2023
Semiconductor device and method of manufacturing the same
KIOXIA CORP0 citations62
US11785774B2Oct 10, 2023
Semiconductor device and method of manufacturing the same
KIOXIA CORP0 citations62
US11737262B2Aug 22, 2023
Nonvolatile semiconductor memory device and method for manufacturing same
KIOXIA CORP0 citations62
US11404437B2Aug 2, 2022
Semiconductor device and method of manufacturing the same
KIOXIA CORP0 citations62
US11335699B2May 17, 2022
Semiconductor device and method of manufacturing the same
KIOXIA CORP0 citations62
US11751397B2Sep 5, 2023
Semiconductor storage device and method of manufacturing the same
KIOXIA CORP0 citations60
US11398494B2Jul 26, 2022
Semiconductor storage device and method of manufacturing the same
KIOXIA CORP0 citations60
US12356620B2Jul 8, 2025
Semiconductor device and method for manufacturing same
KIOXIA CORP0 citations59
US12310065B2May 20, 2025
Semiconductor device, semiconductor memory device, and method for manufacturing semiconductor device
KIOXIA CORP0 citations51
US12477718B2Nov 18, 2025
Semiconductor device and semiconductor memory device each having portions of oxide semiconductor between gate insulating layer and electrodes
KIOXIA CORP0 citations50
TOSHIBA KK
3 patentsUS9287388B2Mar 15, 2016
Nonvolatile semiconductor memory device and method for manufacturing same
TOSHIBA KK10 citations92
US9312271B2Apr 12, 2016
Non-volatile memory device and method for manufacturing same
TOSHIBA KK2 citations63
US9082703B2Jul 14, 2015
Nonvolatile semiconductor memory device, method for manufacturing same, and manufacturing apparatus
TOSHIBA KK0 citations52