Inventor
NAGAI YUJI
JP103 patents
⚠️ This page may combine multiple inventors who share the name “NAGAI YUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAGAI YUJI
14 patentsUS9124432B2Sep 1, 2015
Host device and authentication method for host device
NAGAI YUJI7 citations84
US8995657B2Mar 31, 2015
Device and method for certifying one's own authenticity
NAGAI YUJI7 citations84
US8976586B2Mar 10, 2015
Semiconductor memory device for pseudo-random number generation
NAGAI YUJI12 citations84
US8812843B2Aug 19, 2014
Device and authentication method therefor
NAGAI YUJI7 citations84
US9544138B2Jan 10, 2017
Authenticator, authenticatee and authentication method
NAGAI YUJI2 citations73
US8761389B2Jun 24, 2014
Memory
NAGAI YUJI4 citations73
US8732466B2May 20, 2014
Semiconductor memory device
NAGAI YUJI6 citations73
US8726024B2May 13, 2014
Authentication method
NAGAI YUJI4 citations73
US8650398B2Feb 11, 2014
Device authentication using restricted memory
NAGAI YUJI4 citations73
US8634557B2Jan 21, 2014
Semiconductor storage device
NAGAI YUJI5 citations73
US9191210B2Nov 17, 2015
Authenticator, authenticatee and authentication method
NAGAI YUJI2 citations63
US8762717B2Jun 24, 2014
Authentication device
NAGAI YUJI2 citations63
US8751814B2Jun 10, 2014
Device
NAGAI YUJI2 citations63
US8732470B2May 20, 2014
Storage system in which fictitious information is prevented
NAGAI YUJI2 citations63
TOSHIBA KK
12 patentsUS7139231B2Nov 21, 2006
Information recording and reproducing apparatus, evaluation method, and information recording and reproducing medium
TOSHIBA KK18 citations93
US7082566B2Jul 25, 2006
Signal quality evaluation method, information recording/reproducing system, and recording compensation method
TOSHIBA KK22 citations93
US9294285B2Mar 22, 2016
Information recording device
TOSHIBA KK9 citations84
US7522504B2Apr 21, 2009
Signal quality evaluation method, information recording/reproducing system, and recording compensation method
TOSHIBA KK9 citations84
US7403460B2Jul 22, 2008
Information recording and reproducing apparatus, evaluation method, and information recording and reproducing medium
TOSHIBA KK11 citations84
US7292522B2Nov 6, 2007
Optical disc with wobbled tracks and apparatus using this optical disc
TOSHIBA KK4 citations74
US9286960B2Mar 15, 2016
Memory system and assembling method of memory system
TOSHIBA KK4 citations73
US8959615B2Feb 17, 2015
Storage system in which fictitious information is prevented
TOSHIBA KK4 citations73
US7428203B2Sep 23, 2008
Signal evaluation method, information recording/reproducing apparatus, information reproducing apparatus, and information recording medium
TOSHIBA KK7 citations72
US9319389B2Apr 19, 2016
Data recording device, and method of processing data recording device
TOSHIBA KK2 citations63
US8984294B2Mar 17, 2015
System of authenticating an individual memory device via reading data including prohibited data and readable data
TOSHIBA KK2 citations63
US7400569B2Jul 15, 2008
Optical disc with wobbled tracks and apparatus using this optical disc
TOSHIBA KK1 citations63
TOSHIBA MEMORY CORP
7 patentsUS10860250B2Dec 8, 2020
Memory device
TOSHIBA MEMORY CORP7 citations84
US10361851B2Jul 23, 2019
Authenticator, authenticatee and authentication method
TOSHIBA MEMORY CORP7 citations84
US10459691B2Oct 29, 2019
Randomization of data using a plurality of types of pseudorandom number generators
TOSHIBA MEMORY CORP5 citations83
US10418345B2Sep 17, 2019
Semiconductor memory device
TOSHIBA MEMORY CORP4 citations73
US9953709B2Apr 24, 2018
Semiconductor memory device and memory system
TOSHIBA MEMORY CORP3 citations73
US9922707B2Mar 20, 2018
Semiconductor storage apparatus and memory system comprising memory cell holding data value of multiple bits
TOSHIBA MEMORY CORP4 citations73
US10884706B2Jan 5, 2021
Randomization of data using a plurality of types of pseudorandom number generators
TOSHIBA MEMORY CORP3 citations72
KIOXIA CORP
6 patentsUS11507316B2Nov 22, 2022
Memory device
KIOXIA CORP4 citations84
US12001723B2Jun 4, 2024
Memory device
KIOXIA CORP2 citations73
US11322480B2May 3, 2022
Semiconductor memory device
KIOXIA CORP4 citations73
US12087396B2Sep 10, 2024
Memory system
KIOXIA CORP2 citations71
US11923020B2Mar 5, 2024
Memory device and memory system
KIOXIA CORP2 citations67
US12373143B2Jul 29, 2025
Memory device
KIOXIA CORP0 citations63
KATO TAKU
5 patentsUS8745391B2Jun 3, 2014
Data recording device, host device and method of processing data recording device
KATO TAKU5 citations84
US8661527B2Feb 25, 2014
Authenticator, authenticatee and authentication method
KATO TAKU10 citations83
US8850207B2Sep 30, 2014
Data recording device, and method of processing data recording device
KATO TAKU5 citations73
US8667286B2Mar 4, 2014
Host device, semiconductor memory device, and authentication method
KATO TAKU2 citations63
US8650393B2Feb 11, 2014
Authenticator
KATO TAKU3 citations63
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
2 patentsUS6470166B2Oct 22, 2002
Color image forming apparatus that minimizes contact between transfer belt and photosensitive drum
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD43 citations90
US6963715B2Nov 8, 2005
Image transfer section of color image forming apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations83
FUJITSU LTD
1 patentTOYO ALUMINIUM KK
1 patentNEC CORP
1 patentSONY CORP
1 patentShowing the top 50 of 103 patents by PatentIndex Score.