Inventor
MIZUSHIMA NAGAMASA
JP52 patents
⚠️ This page may combine multiple inventors who share the name “MIZUSHIMA NAGAMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
32 patentsUS7761655B2Jul 20, 2010
Storage system and method of preventing deterioration of write performance in storage system
HITACHI LTD111 citations98
US7571277B2Aug 4, 2009
Semiconductor memory system for flash memory
HITACHI LTD111 citations98
US9116858B1Aug 25, 2015
Direct memory access with conversion or reverse conversion of data
HITACHI LTD25 citations92
US8015417B2Sep 6, 2011
Remote access system, gateway, client device, program, and storage medium
HITACHI LTD20 citations92
US7415729B2Aug 19, 2008
Storage device
HITACHI LTD28 citations92
US6915427B2Jul 5, 2005
Hub apparatus with copyright protection function
HITACHI LTD30 citations92
US6459644B2Oct 1, 2002
Semiconductor memory device with block alignment function
HITACHI LTD41 citations92
US7831764B2Nov 9, 2010
Storage system having plural flash memory drives and method for controlling data storage
HITACHI LTD17 citations84
US11829600B2Nov 28, 2023
Storage system and data processing method using data compression
HITACHI LTD2 citations73
US11360669B2Jun 14, 2022
Storage device accelerator providing aggregation of divided plaintext data
HITACHI LTD1 citations73
US9727246B2Aug 8, 2017
Memory device, computer system, and method of controlling memory device
HITACHI LTD2 citations73
US11481114B2Oct 25, 2022
Storage apparatus and control method of storage apparatus
HITACHI LTD2 citations72
US12019921B2Jun 25, 2024
Apparatus for processing received data
HITACHI LTD0 citations63
US11640265B2May 2, 2023
Apparatus for processing received data
HITACHI LTD0 citations63
US11119702B1Sep 14, 2021
Apparatus for processing received data
HITACHI LTD0 citations63
US10444992B2Oct 15, 2019
Storage device, apparatus having storage device, and storage control method
HITACHI LTD1 citations63
US9479194B2Oct 25, 2016
Data compression apparatus and data decompression apparatus
HITACHI LTD2 citations63
US9092320B2Jul 28, 2015
Storage system which includes non-volatile semiconductor storage medium, and storage control method of storage system
HITACHI LTD2 citations63
US12353712B2Jul 8, 2025
Storage device
HITACHI LTD0 citations62
US11625168B2Apr 11, 2023
Storage device accelerator providing aggregation of divided plaintext data read
HITACHI LTD0 citations62
US11455122B2Sep 27, 2022
Storage system and data compression method for storage system
HITACHI LTD1 citations62
US12073080B2Aug 27, 2024
System and method for improving reliability of a data storage system
HITACHI LTD0 citations61
US12430475B2Sep 30, 2025
Computer and data processing method
HITACHI LTD0 citations52
US11275505B2Mar 15, 2022
Storage system
HITACHI LTD0 citations52
US11216336B2Jan 4, 2022
Storage apparatus and memory device control method
HITACHI LTD0 citations52
US10102060B2Oct 16, 2018
Storage apparatus and data control method of storing data with an error correction code
HITACHI LTD1 citations52
US9021212B2Apr 28, 2015
Semiconductor memory system having a snapshot function
HITACHI LTD0 citations52
US8972823B2Mar 3, 2015
Error correcting for improving reliability by combination of storage system and flash memory device
HITACHI LTD0 citations52
US8683141B2Mar 25, 2014
Semiconductor memory system having a snapshot function
HITACHI LTD0 citations52
US7100055B2Aug 29, 2006
Information storage system, information transfer system and storage medium thereof
HITACHI LTD1 citations52
US9667697B2May 30, 2017
Direct memory access with conversion or reverse conversion of data
HITACHI LTD0 citations51
US10067828B2Sep 4, 2018
Memory controller and data control method
HITACHI LTD0 citations42
RENESAS TECH CORP
11 patentsUS7162645B2Jan 9, 2007
Storage device including a non-volatile memory
RENESAS TECH CORP89 citations98
US7558110B2Jul 7, 2009
IC module and cellular phone
RENESAS TECH CORP84 citations97
US7281101B2Oct 9, 2007
Memory device storing data relating to specific application programs
RENESAS TECH CORP57 citations96
US7054990B1May 30, 2006
External storage device using non-volatile semiconductor memory
RENESAS TECH CORP75 citations96
US7708195B2May 4, 2010
Memory card
RENESAS TECH CORP32 citations92
US7185145B2Feb 27, 2007
Memory card
RENESAS TECH CORP28 citations92
US7650503B2Jan 19, 2010
Memory card
RENESAS TECH CORP8 citations84
US7469837B2Dec 30, 2008
Storage device
RENESAS TECH CORP19 citations84
US7303136B2Dec 4, 2007
Storage device
RENESAS TECH CORP14 citations84
US7694067B2Apr 6, 2010
Memory card
RENESAS TECH CORP7 citations74
US7350023B2Mar 25, 2008
Memory card
RENESAS TECH CORP6 citations74
MIZUSHIMA NAGAMASA
4 patentsUS8151060B2Apr 3, 2012
Semiconductor memory system having a snapshot function
MIZUSHIMA NAGAMASA20 citations92
US8677213B2Mar 18, 2014
Electronic device comprising error correction coding device and electronic device comprising error correction decoding device
MIZUSHIMA NAGAMASA7 citations83
US8417896B2Apr 9, 2013
Semiconductor memory system having a snapshot function
MIZUSHIMA NAGAMASA3 citations62
US8312203B2Nov 13, 2012
Semiconductor storage device and method of controlling a semiconductor storage device by allocating a physical block composed of plural pages to a group of logical addresses
MIZUSHIMA NAGAMASA2 citations62
KITAHARA JUN
1 patentYOKOI NOBUHIRO
1 patentKATO TAKATOSHI
1 patentShowing the top 50 of 52 patents by PatentIndex Score.