Inventor · disambiguated record
Ryota Katsumata
Also filed as: KATSUMATA RYOTA
190 granted patents·23 pending applications·5,182 citations·filing 1997–2025
99Inventor score
Top patents by PatentIndex Score
213 records- 0199US11792992B2Nonvolatile semiconductor memory device and method for manufacturing sameKIOXIA CORP·Filed 2022·Granted Oct 17, 2023·4 cites·10 claims
- 0299US11362106B2Manufacturing method of a nonvolatile semiconductor memory deviceKIOXIA CORP·Filed 2021·Granted Jun 14, 2022·5 cites·20 claims
- 0399US10074667B1Semiconductor memory deviceTOSHIBA MEMORY CORP·Filed 2017·Granted Sep 11, 2018·162 cites·20 claims
- 0499US9035374B2Non-volatile semiconductor storage device and method of manufacturing the sameTOSHIBA KK·Filed 2014·Granted May 19, 2015·36 cites·20 claims
- 0599US8729624B2Non-volatile semiconductor storage device and method of manufacturing the sameTOSHIBA KK·Filed 2013·Granted May 20, 2014·53 cites·20 claims
- 0699US8551838B2Nonvolatile semicondutor memory device and manufacturing method thereofKITO MASARU·Filed 2011·Granted Oct 8, 2013·52 cites·20 claims
- 0799US8372720B2Non-volatile semiconductor storage device and method of manufacturing the sameTOSHIBA KK·Filed 2008·Granted Feb 12, 2013·127 cites·8 claims
- 0899US8374033B2Nonvolatile semiconductor memory deviceTOSHIBA KK·Filed 2010·Granted Feb 12, 2013·200 cites·9 claims
- 0999US8338882B2Semiconductor memory device and method for manufacturing sameTANAKA HIROYASU·Filed 2010·Granted Dec 25, 2012·273 cites·11 claims
- 1099US8008710B2Non-volatile semiconductor storage deviceTOSHIBA KK·Filed 2009·Granted Aug 30, 2011·275 cites·20 claims
- 1199US7936004B2Nonvolatile semiconductor memory device and manufacturing method thereofTOSHIBA KK·Filed 2007·Granted May 3, 2011·310 cites·26 claims
- 1299US7910432B2Non-volatile semiconductor storage device and method of manufacturing the sameTOSHIBA KK·Filed 2009·Granted Mar 22, 2011·231 cites·20 claims
- 1399US7558141B2Memory system, semiconductor memory device and method of driving sameTOSHIBA KK·Filed 2007·Granted Jul 7, 2009·222 cites·19 claims
- 1498US11270980B2Memory deviceKIOXIA CORP·Filed 2020·Granted Mar 8, 2022·6 cites·14 claims
- 1598US10950630B2Semiconductor memoryTOSHIBA MEMORY CORP·Filed 2020·Granted Mar 16, 2021·4 cites·14 claims
- 1698US10916559B2Nonvolatile semiconductor memory device and manufacturing method thereofKIOXIA CORP·Filed 2019·Granted Feb 9, 2021·10 cites·20 claims
- 1798US10297578B2Memory deviceTOSHIBA MEMORY CORP·Filed 2017·Granted May 21, 2019·38 cites·20 claims
- 1898US10211219B2Nonvolatile semiconductor memory device and manufacturing method thereofTOSHIBA KK·Filed 2017·Granted Feb 19, 2019·11 cites·14 claims
- 1998US9356042B2Non-volatile semiconductor storage device and method of manufacturing the sameTOSHIBA KK·Filed 2015·Granted May 31, 2016·32 cites·16 claims
- 2098US8436414B2Non-volatile semiconductor stacked memory device having two semiconductor pillars in a through hole and method for manufacturing sameTANAKA HIROYASU·Filed 2010·Granted May 7, 2013·56 cites·18 claims
- 2198US8405142B2Semiconductor memory deviceKATSUMATA RYOTA·Filed 2011·Granted Mar 26, 2013·46 cites·7 claims
- 2298US8288816B2Semiconductor memory device and method for manufacturing sameKOMORI YOSUKE·Filed 2010·Granted Oct 16, 2012·238 cites·14 claims
- 2398US8274108B2Nonvolatile semiconductor memory device and method for manufacturing the sameKATSUMATA RYOTA·Filed 2010·Granted Sep 25, 2012·48 cites·14 claims
- 2498US8178919B2Nonvolatile semiconductor memory device and method for manufacturing sameFUJIWARA TOMOKO·Filed 2010·Granted May 15, 2012·216 cites·15 claims
- 2598US8169826B2Nonvolatile semiconductor memory deviceHISHIDA TOMOO·Filed 2010·Granted May 1, 2012·68 cites·20 claims
- 2698US7847334B2Non-volatile semiconductor storage device and method of manufacturing the sameTOSHIBA KK·Filed 2009·Granted Dec 7, 2010·85 cites·9 claims
- 2798US7821058B2Nonvolatile semiconductor memory and method for manufacturing the sameTOSHIBA KK·Filed 2008·Granted Oct 26, 2010·95 cites·15 claims
- 2898US7539056B2Nonvolatile semiconductor memoryTOSHIBA KK·Filed 2007·Granted May 26, 2009·103 cites·20 claims
- 2997US9502299B2Semiconductor memoryTOSHIBA KK·Filed 2014·Granted Nov 22, 2016·19 cites·20 claims
- 3097US8653582B2Nonvolatile semiconductor memory device and method for manufacturing sameFUKUZUMI YOSHIAKI·Filed 2010·Granted Feb 18, 2014·26 cites·15 claims
- 3197US8278695B2Nonvolatile semiconductor memory device and manufacturing method thereofKIDOH MASARU·Filed 2007·Granted Oct 2, 2012·72 cites·12 claims
- 3297US8189391B2Non-volatile semiconductor storage device including a control circuitITAGAKI KIYOTARO·Filed 2009·Granted May 29, 2012·81 cites·18 claims
- 3397US8188530B2Nonvolatile semiconductor memory device and method for manufacturing sameTANAKA HIROYASU·Filed 2010·Granted May 29, 2012·31 cites·15 claims
- 3497US8013383B2Nonvolatile semiconductor storage device including a plurality of memory stringsTOSHIBA KK·Filed 2009·Granted Sep 6, 2011·63 cites·11 claims
- 3597US7847342B2Non-volatile semiconductor storage device and method of manufacturing the sameTOSHIBA KK·Filed 2008·Granted Dec 7, 2010·71 cites·11 claims
- 3696US10381374B2Semiconductor memoryTOSHIBA MEMORY CORP·Filed 2018·Granted Aug 13, 2019·10 cites·20 claims
- 3796US9941296B2Nonvolatile semiconductor memory device and method for manufacturing sameTOSHIBA MEMORY CORP·Filed 2017·Granted Apr 10, 2018·7 cites·7 claims
- 3896US9601503B2Nonvolatile semiconductor memory device and method for manufacturing sameTOSHIBA KK·Filed 2016·Granted Mar 21, 2017·7 cites·16 claims
- 3996US9312134B2Nonvolatile semiconductor memory device and method for manufacturing sameTOSHIBA KK·Filed 2014·Granted Apr 12, 2016·12 cites·20 claims
- 4096US9064735B2Nonvolatile semiconductor memory device and manufacturing method thereofKITO MASARU·Filed 2011·Granted Jun 23, 2015·18 cites·20 claims
- 4196US8350314B2Semiconductor memory device and method for fabricating semiconductor memory deviceTOSHIBA KK·Filed 2008·Granted Jan 8, 2013·37 cites·20 claims
- 4296US8247863B2Nonvolatile semiconductor memory device and method of manufacturing the sameFUKUZUMI YOSHIAKI·Filed 2010·Granted Aug 21, 2012·28 cites·20 claims
- 4396US8199573B2Nonvolatile semiconductor memory deviceFUKUZUMI YOSHIAKI·Filed 2010·Granted Jun 12, 2012·35 cites·20 claims
- 4496US8178917B2Non-volatile semiconductor storage device having memory cells disposed three-dimensionally, and method of manufacturing the sameTANAKA HIROYASU·Filed 2009·Granted May 15, 2012·36 cites·20 claims
- 4596US8089120B2Semiconductor memory deviceTANAKA HIROYASU·Filed 2009·Granted Jan 3, 2012·46 cites·20 claims
- 4696US8017993B2Nonvolatile semiconductor memory device and method for manufacturing sameTOSHIBA KK·Filed 2009·Granted Sep 13, 2011·46 cites·11 claims
- 4796US7910914B2Semiconductor memory and method for manufacturing the sameTOSHIBA KK·Filed 2008·Granted Mar 22, 2011·52 cites·18 claims
- 4895US11552095B2Semiconductor memory having first and second memory cell regions separated by a third region along a bit line directionKIOXIA CORP·Filed 2021·Granted Jan 10, 2023·2 cites·12 claims
- 4995US11374021B2Manufacturing method of a nonvolatile semiconductor memory deviceKIOXIA CORP·Filed 2021·Granted Jun 28, 2022·2 cites·19 claims
- 5095US10741527B2Memory deviceTOSHIBA MEMORY CORP·Filed 2019·Granted Aug 11, 2020·9 cites·9 claims
Showing the top 50 of 213 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →