Inventor · disambiguated record
Mutsumi Okajima
Also filed as: OKAJIMA MUTSUMI
34 granted patents·22 pending applications·123 citations·filing 2002–2025
95Inventor score
Top patents by PatentIndex Score
56 records- 0194US9768233B1Semiconductor device and method of manufacturing the sameTOSHIBA MEMORY CORP·Filed 2016·Granted Sep 19, 2017·14 cites·11 claims
- 0292US12052854B2Semiconductor memory deviceKIOXIA CORP·Filed 2021·Granted Jul 30, 2024·2 cites·20 claims
- 0392US7713819B2Semiconductor device manufacturing method and semiconductor integrated circuit deviceTOSHIBA KK·Filed 2007·Granted May 11, 2010·20 cites·4 claims
- 0491US10192928B2Semiconductor device and method of manufacturing the sameTOSHIBA MEMORY CORP·Filed 2017·Granted Jan 29, 2019·7 cites·9 claims
- 0589US7687387B2Semiconductor device and method of manufacturing the sameTOSHIBA KK·Filed 2008·Granted Mar 30, 2010·35 cites·15 claims
- 0686US11956942B2Memory device and method for manufacturing the sameKIOXIA CORP·Filed 2021·Granted Apr 9, 2024·1 cites·11 claims
- 0783US11569256B2Memory device with transistors above memory stacks and manufacturing method of the memory deviceKIOXIA CORP·Filed 2020·Granted Jan 31, 2023·2 cites·16 claims
- 0883US11387227B2Memory device having multiple chips and method for manufacturing the sameKIOXIA CORP·Filed 2020·Granted Jul 12, 2022·1 cites·15 claims
- 0983US9093642B2Non-volatile memory device and method of manufacturing the sameTOSHIBA KK·Filed 2013·Granted Jul 28, 2015·5 cites·13 claims
- 1081US9721961B2Semiconductor memory deviceTOSHIBA KK·Filed 2015·Granted Aug 1, 2017·4 cites·18 claims
- 1179US9257484B2Non-volatile memory device and method of manufacturing the sameTOSHIBA KK·Filed 2013·Granted Feb 9, 2016·4 cites·15 claims
- 1274US9570392B2Memory device and method for manufacturing the sameTOSHIBA KK·Filed 2015·Granted Feb 14, 2017·2 cites·20 claims
- 1374US2025212411A1Memory deviceKIOXIA CORP·Filed 2025·Application pending·0 cites
- 1472US7321147B2Semiconductor device including a trench capacitorTOSHIBA KK·Filed 2006·Granted Jan 22, 2008·4 cites·3 claims
- 1571US7851305B2Method of manufacturing nonvolatile semiconductor memoryTOSHIBA KK·Filed 2007·Granted Dec 14, 2010·4 cites·11 claims
- 1669US11942466B2Memory device having multiple chips and method for manufacturing the sameKIOXIA CORP·Filed 2022·Granted Mar 26, 2024·0 cites·9 claims
- 1767US12238929B2Memory deviceKIOXIA CORP·Filed 2021·Granted Feb 25, 2025·0 cites·5 claims
- 1867US2025275130A1Semiconductor memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 1964US10269433B2Memory deviceTOSHIBA MEMORY CORP·Filed 2018·Granted Apr 23, 2019·2 cites·15 claims
- 2064US8093647B2Nonvolatile semiconductor memory having transistor with a diffusion blocking layer between the lower gate and fully silicided upper gateSATO ATSUHIRO·Filed 2007·Granted Jan 10, 2012·2 cites·8 claims
- 2164US6759333B2Semiconductor device and method of manufacturing the sameTOSHIBA KK·Filed 2002·Granted Jul 6, 2004·13 cites·13 claims
- 2264US2024324174A1Semiconductor memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 2363US2025070024A1Semiconductor memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 2463US2025299708A1Semiconductor memory deviceKIOXIA CORP·Filed 2025·Application pending·0 cites
- 2560US2024312911A1Semiconductor memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 2660US2025098141A1Semiconductor memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 2759US2024260253A1Semiconductor memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 2859US2024315007A1Semiconductor deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 2956US11871586B2Magnetic memoryKIOXIA CORP·Filed 2022·Granted Jan 9, 2024·0 cites·16 claims
- 3056US2023301065A1Semiconductor memory device and method of producing the sameKIOXIA CORP·Filed 2022·Application pending·0 cites
- 3156US2024421071A1Semiconductor memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 3255US11711925B2Magnetic memoryKIOXIA CORP·Filed 2021·Granted Jul 25, 2023·0 cites·22 claims
- 3354US12464733B2Magnetic memoryKIOXIA CORP·Filed 2022·Granted Nov 4, 2025·0 cites·33 claims
- 3454US8835897B2Nonvolatile memory device having variable resistance memory cellsOKAJIMA MUTSUMI·Filed 2009·Granted Sep 16, 2014·1 cites·2 claims
- 3554US2025095692A1Semiconductor memory deviceKIOXIA CORP·Filed 2024·Application pending·0 cites
- 3652US12464706B2Semiconductor memory deviceKIOXIA CORP·Filed 2023·Granted Nov 4, 2025·0 cites·18 claims
- 3752US11665882B2Semiconductor memory deviceKIOXIA CORP·Filed 2020·Granted May 30, 2023·0 cites·4 claims
- 3851US2022285350A1Memory device and method of manufacturing memory deviceKIOXIA CORP·Filed 2022·Application pending·0 cites
- 3950US12354697B2Semiconductor memory deviceKIOXIA CORP·Filed 2023·Granted Jul 8, 2025·0 cites·27 claims
- 4050US12354696B2Semiconductor memory deviceKIOXIA CORP·Filed 2023·Granted Jul 8, 2025·0 cites·19 claims
- 4150US2024090203A1Semiconductor storage deviceKIOXIA CORP·Filed 2023·Application pending·0 cites
- 4247US12041788B2Storage device and method for manufacturing storage deviceKIOXIA CORP·Filed 2021·Granted Jul 16, 2024·0 cites·16 claims
- 4347US10332935B2Storage apparatusTOSHIBA MEMORY CORP·Filed 2018·Granted Jun 25, 2019·0 cites·6 claims
- 4446US11900986B2Semiconductor memory device with a plurality of memory unitsKIOXIA CORP·Filed 2021·Granted Feb 13, 2024·0 cites·19 claims
- 4543US10211259B2Semiconductor memory device and method of manufacturing the sameTOSHIBA MEMORY CORP·Filed 2017·Granted Feb 19, 2019·0 cites·8 claims
- 4643US8836008B2Semiconductor device and method of manufacturing sameOKAJIMA MUTSUMI·Filed 2012·Granted Sep 16, 2014·0 cites·13 claims
- 4743US2008093652A1Semiconductor device and method of manufacturing sameOKAJIMA MUTSUMI·Filed 2007·Application pending·0 cites
- 4842US10325958B2Memory device and method for manufacturing sameTOSHIBA MEMORY CORP·Filed 2017·Granted Jun 18, 2019·0 cites·20 claims
- 4942US2010172178A1Semiconductor device manufacturing method and semiconductor integrated circuit deviceTOSHIBA KK·Filed 2010·Application pending·0 cites
- 5041US2022406783A1Semiconductor memory deviceKIOXIA CORP·Filed 2021·Application pending·0 cites
Showing the top 50 of 56 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Mutsumi Okajima files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →