Inventor · disambiguated record
Yuji Nagai
Also filed as: NAGAI YUJI
103 granted patents·43 pending applications·415 citations·filing 1976–2025
99Inventor score
Top patents by PatentIndex Score
146 records- 0197US11507316B2Memory deviceKIOXIA CORP·Filed 2020·Granted Nov 22, 2022·4 cites·20 claims
- 0295US12001723B2Memory deviceKIOXIA CORP·Filed 2022·Granted Jun 4, 2024·2 cites·18 claims
- 0393US10361851B2Authenticator, authenticatee and authentication methodTOSHIBA MEMORY CORP·Filed 2018·Granted Jul 23, 2019·7 cites·6 claims
- 0492US10860250B2Memory deviceTOSHIBA MEMORY CORP·Filed 2019·Granted Dec 8, 2020·7 cites·11 claims
- 0591US7403460B2Information recording and reproducing apparatus, evaluation method, and information recording and reproducing mediumTOSHIBA KK·Filed 2006·Granted Jul 22, 2008·11 cites·5 claims
- 0690US8661527B2Authenticator, authenticatee and authentication methodKATO TAKU·Filed 2012·Granted Feb 25, 2014·10 cites·2 claims
- 0790US7522504B2Signal quality evaluation method, information recording/reproducing system, and recording compensation methodTOSHIBA KK·Filed 2006·Granted Apr 21, 2009·9 cites·5 claims
- 0889US12087396B2Memory systemKIOXIA CORP·Filed 2022·Granted Sep 10, 2024·2 cites·20 claims
- 0989US8976586B2Semiconductor memory device for pseudo-random number generationNAGAI YUJI·Filed 2012·Granted Mar 10, 2015·12 cites·20 claims
- 1089US7082566B2Signal quality evaluation method, information recording/reproducing system, and recording compensation methodTOSHIBA KK·Filed 2002·Granted Jul 25, 2006·22 cites·5 claims
- 1189US6470166B2Color image forming apparatus that minimizes contact between transfer belt and photosensitive drumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Oct 22, 2002·43 cites·13 claims
- 1289US2025328291A1Memory deviceKIOXIA CORP·Filed 2025·Application pending·0 cites
- 1388US10459691B2Randomization of data using a plurality of types of pseudorandom number generatorsTOSHIBA MEMORY CORP·Filed 2017·Granted Oct 29, 2019·5 cites·55 claims
- 1488US9294285B2Information recording deviceTOSHIBA KK·Filed 2014·Granted Mar 22, 2016·9 cites·4 claims
- 1587US11322480B2Semiconductor memory deviceKIOXIA CORP·Filed 2019·Granted May 3, 2022·4 cites·18 claims
- 1687US10418345B2Semiconductor memory deviceTOSHIBA MEMORY CORP·Filed 2018·Granted Sep 17, 2019·4 cites·14 claims
- 1786US7139231B2Information recording and reproducing apparatus, evaluation method, and information recording and reproducing mediumTOSHIBA KK·Filed 2003·Granted Nov 21, 2006·18 cites·2 claims
- 1885US11923020B2Memory device and memory systemKIOXIA CORP·Filed 2022·Granted Mar 5, 2024·2 cites·18 claims
- 1985US10884706B2Randomization of data using a plurality of types of pseudorandom number generatorsTOSHIBA MEMORY CORP·Filed 2019·Granted Jan 5, 2021·3 cites·13 claims
- 2085US9124432B2Host device and authentication method for host deviceNAGAI YUJI·Filed 2012·Granted Sep 1, 2015·7 cites·2 claims
- 2185US8812843B2Device and authentication method thereforNAGAI YUJI·Filed 2012·Granted Aug 19, 2014·7 cites·1 claims
- 2284US8995657B2Device and method for certifying one's own authenticityNAGAI YUJI·Filed 2012·Granted Mar 31, 2015·7 cites·2 claims
- 2384US7545943B2Apparatus, method, and computer program product for playing back contentTOSHIBA KK·Filed 2006·Granted Jun 9, 2009·6 cites·17 claims
- 2483US8745391B2Data recording device, host device and method of processing data recording deviceKATO TAKU·Filed 2012·Granted Jun 3, 2014·5 cites·1 claims
- 2583US7352671B2Storage medium, reproducing method, and recording methodTOSHIBA KK·Filed 2006·Granted Apr 1, 2008·3 cites·3 claims
- 2682US12373143B2Memory deviceKIOXIA CORP·Filed 2024·Granted Jul 29, 2025·0 cites·11 claims
- 2782US9286960B2Memory system and assembling method of memory systemTOSHIBA KK·Filed 2014·Granted Mar 15, 2016·4 cites·14 claims
- 2882US8634557B2Semiconductor storage deviceNAGAI YUJI·Filed 2012·Granted Jan 21, 2014·5 cites·2 claims
- 2981US8850207B2Data recording device, and method of processing data recording deviceKATO TAKU·Filed 2012·Granted Sep 30, 2014·5 cites·5 claims
- 3081US8732466B2Semiconductor memory deviceNAGAI YUJI·Filed 2012·Granted May 20, 2014·6 cites·16 claims
- 3181US7091887B2Modulator, modulation method, and method of manufacturing an optical recordable medium with enhanced security for confidential informationTOSHIBA KK·Filed 2005·Granted Aug 15, 2006·4 cites·17 claims
- 3280US4326238AElectronic circuit packagesFUJITSU LTD·Filed 1978·Granted Apr 20, 1982·39 cites·38 claims
- 3379US7353618B2Magnetic scaleSONY CORP·Filed 2006·Granted Apr 8, 2008·5 cites·9 claims
- 3478US8761389B2MemoryNAGAI YUJI·Filed 2012·Granted Jun 24, 2014·4 cites·6 claims
- 3578US8726024B2Authentication methodNAGAI YUJI·Filed 2012·Granted May 13, 2014·4 cites·1 claims
- 3678US8650398B2Device authentication using restricted memoryNAGAI YUJI·Filed 2012·Granted Feb 11, 2014·4 cites·2 claims
- 3777US9922707B2Semiconductor storage apparatus and memory system comprising memory cell holding data value of multiple bitsTOSHIBA MEMORY CORP·Filed 2016·Granted Mar 20, 2018·4 cites·5 claims
- 3877US8959615B2Storage system in which fictitious information is preventedTOSHIBA KK·Filed 2013·Granted Feb 17, 2015·4 cites·1 claims
- 3977US8650393B2AuthenticatorKATO TAKU·Filed 2012·Granted Feb 11, 2014·3 cites·10 claims
- 4077US6963715B2Image transfer section of color image forming apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Nov 8, 2005·17 cites·10 claims
- 4175US12229450B2Semiconductor memory deviceKIOXIA CORP·Filed 2023·Granted Feb 18, 2025·0 cites·14 claims
- 4274US9953709B2Semiconductor memory device and memory systemTOSHIBA MEMORY CORP·Filed 2016·Granted Apr 24, 2018·3 cites·20 claims
- 4374US7400569B2Optical disc with wobbled tracks and apparatus using this optical discTOSHIBA KK·Filed 2007·Granted Jul 15, 2008·1 cites·3 claims
- 4472US9319389B2Data recording device, and method of processing data recording deviceTOSHIBA KK·Filed 2014·Granted Apr 19, 2016·2 cites·2 claims
- 4572US8667286B2Host device, semiconductor memory device, and authentication methodKATO TAKU·Filed 2012·Granted Mar 4, 2014·2 cites·8 claims
- 4671US9166783B2Protection method, decryption method, player, storage medium, and encryption apparatus of digital contentNAGAI YUJI·Filed 2011·Granted Oct 20, 2015·3 cites·25 claims
- 4771US2025147697A1Semiconductor memory deviceKIOXIA CORP·Filed 2025·Application pending·0 cites
- 4870US10346068B2Memory system and method of performing a read operation on a memory cell of a non-volatile semiconductor storage device including a plurality of blocks of memoryTOSHIBA MEMORY CORP·Filed 2017·Granted Jul 9, 2019·1 cites·20 claims
- 4970US8762717B2Authentication deviceNAGAI YUJI·Filed 2012·Granted Jun 24, 2014·2 cites·1 claims
- 5070US8751814B2DeviceNAGAI YUJI·Filed 2012·Granted Jun 10, 2014·2 cites·2 claims
Showing the top 50 of 146 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →