Inventor · disambiguated record
Akihiro Nitayama
Also filed as: NITAYAMA AKIHIRO
54 granted patents·3 pending applications·2,232 citations·filing 1987–2025
99Inventor score
Top patents by PatentIndex Score
57 records- 0199US11362106B2Manufacturing method of a nonvolatile semiconductor memory deviceKIOXIA CORP·Filed 2021·Granted Jun 14, 2022·5 cites·20 claims
- 0299US8551838B2Nonvolatile semicondutor memory device and manufacturing method thereofKITO MASARU·Filed 2011·Granted Oct 8, 2013·52 cites·20 claims
- 0399US7936004B2Nonvolatile semiconductor memory device and manufacturing method thereofTOSHIBA KK·Filed 2007·Granted May 3, 2011·310 cites·26 claims
- 0499US7920412B2Magnetic random access memory and method of manufacturing the sameTOSHIBA KK·Filed 2009·Granted Apr 5, 2011·102 cites·5 claims
- 0599US7609551B2Semiconductor memory deviceTOSHIBA KK·Filed 2007·Granted Oct 27, 2009·255 cites·20 claims
- 0698US10916559B2Nonvolatile semiconductor memory device and manufacturing method thereofKIOXIA CORP·Filed 2019·Granted Feb 9, 2021·10 cites·20 claims
- 0798US10211219B2Nonvolatile semiconductor memory device and manufacturing method thereofTOSHIBA KK·Filed 2017·Granted Feb 19, 2019·11 cites·14 claims
- 0898US5258635AMOS-type semiconductor integrated circuit deviceTOSHIBA KK·Filed 1991·Granted Nov 2, 1993·249 cites·14 claims
- 0997US8189391B2Non-volatile semiconductor storage device including a control circuitITAGAKI KIYOTARO·Filed 2009·Granted May 29, 2012·81 cites·18 claims
- 1097US8013383B2Nonvolatile semiconductor storage device including a plurality of memory stringsTOSHIBA KK·Filed 2009·Granted Sep 6, 2011·63 cites·11 claims
- 1196US9064735B2Nonvolatile semiconductor memory device and manufacturing method thereofKITO MASARU·Filed 2011·Granted Jun 23, 2015·18 cites·20 claims
- 1295US11374021B2Manufacturing method of a nonvolatile semiconductor memory deviceKIOXIA CORP·Filed 2021·Granted Jun 28, 2022·2 cites·19 claims
- 1395US2025380421A1Nonvolatile semiconductor memory device and manufacturing method thereofKIOXIA CORP·Filed 2025·Application pending·0 cites
- 1494US8605508B2Non-volatile semiconductor storage device having control circuit to control voltages to select transistor for erase operationITAGAKI KIYOTARO·Filed 2012·Granted Dec 10, 2013·18 cites·16 claims
- 1594US8237211B2Non-volatile semiconductor storage device and method of manufacturing the sameFUKUZUMI YOSHIAKI·Filed 2009·Granted Aug 7, 2012·24 cites·13 claims
- 1694US7977738B2Semiconductor memory device and manufacturing method thereofTOSHIBA KK·Filed 2009·Granted Jul 12, 2011·31 cites·9 claims
- 1794US5905279ALow resistant trench fill for a semiconductor deviceTOSHIBA KK·Filed 1996·Granted May 18, 1999·113 cites·28 claims
- 1893US8334551B2Non-volatile semiconductor storage deviceITAGAKI KIYOTARO·Filed 2009·Granted Dec 18, 2012·26 cites·15 claims
- 1992US6236079B1Dynamic semiconductor memory device having a trench capacitorTOSHIBA KK·Filed 1997·Granted May 22, 2001·92 cites·9 claims
- 2091US7706175B2Magnetic random access memory and method of manufacturing the sameTOSHIBA KK·Filed 2007·Granted Apr 27, 2010·21 cites·17 claims
- 2190US8203193B2Magnetic random access memory and manufacturing method of the sameKAJIYAMA TAKESHI·Filed 2011·Granted Jun 19, 2012·8 cites·2 claims
- 2289US12414299B2Nonvolatile semiconductor memory device and manufacturing method thereofKIOXIA CORP·Filed 2023·Granted Sep 9, 2025·0 cites·15 claims
- 2388US9748260B2Nonvolatile semiconductor memory device and manufacturing method thereofTOSHIBA KK·Filed 2015·Granted Aug 29, 2017·3 cites·12 claims
- 2488US7414879B2Semiconductor memory deviceTOSHIBA KK·Filed 2005·Granted Aug 19, 2008·20 cites·10 claims
- 2588US5248628AMethod of fabricating a semiconductor memory deviceTOSHIBA KK·Filed 1992·Granted Sep 28, 1993·69 cites·12 claims
- 2687US6720606B1Dynamic semiconductor memory device having a trench capacitorTOSHIBA KK·Filed 2000·Granted Apr 13, 2004·39 cites·12 claims
- 2787US5998821ADynamic ram structure having a trench capacitorTOSHIBA KK·Filed 1997·Granted Dec 7, 1999·75 cites·16 claims
- 2885US6707706B2Semiconductor memory device and method for manufacturing the sameTOSHIBA KK·Filed 2002·Granted Mar 16, 2004·37 cites·25 claims
- 2985US5138412ADynamic ram, having an improved large capacitanceTOSHIBA KK·Filed 1991·Granted Aug 11, 1992·65 cites·12 claims
- 3083US7692963B2Semiconductor memory deviceTOSHIBA KK·Filed 2007·Granted Apr 6, 2010·10 cites·20 claims
- 3183US5747844ADynamic semiconductor memory device with higher density bit line/word line layoutTOSHIBA KK·Filed 1996·Granted May 5, 1998·45 cites·31 claims
- 3282US11903205B2Method for reading data of a first memory cell transistor of a nonvolatile semiconductor memory deviceKIOXIA CORP·Filed 2022·Granted Feb 13, 2024·0 cites·20 claims
- 3382US11903207B2Method for writing data of a first memory cell transistor of a nonvolatile semiconductor memory deviceKIOXIA CORP·Filed 2022·Granted Feb 13, 2024·0 cites·20 claims
- 3482US8884389B2Magnetoresistive element and method of manufacturing the sameTOKO MASARU·Filed 2012·Granted Nov 11, 2014·6 cites·15 claims
- 3580US5363325ADynamic semiconductor memory device having high integration densityTOSHIBA KK·Filed 1992·Granted Nov 8, 1994·46 cites·17 claims
- 3674US5049957AMOS type dynamic random access memoryTOSHIBA KK·Filed 1990·Granted Sep 17, 1991·32 cites·11 claims
- 3771US5311050ASemiconductor vertical MOSFET inverter circuitTOSHIBA KK·Filed 1991·Granted May 10, 1994·32 cites·10 claims
- 3871US5234780AExposure mask, method of manufacturing the same, and exposure method using the sameTOSHIBA KK·Filed 1990·Granted Aug 10, 1993·20 cites·2 claims
- 3971US5144579ASemiconductor memory device and its fabricating methodTOSHIBA KK·Filed 1990·Granted Sep 1, 1992·31 cites·9 claims
- 4069US5350708AMethod of making dynamic random access semiconductor memory deviceTOSHIBA KK·Filed 1993·Granted Sep 27, 1994·23 cites·3 claims
- 4168US6204527B1Semiconductor memory device and method for producing sameTOSHIBA KK·Filed 1998·Granted Mar 20, 2001·28 cites·14 claims
- 4267US4784969AMethod of manufacturing a semiconductor memory deviceTOSHIBA KK·Filed 1987·Granted Nov 15, 1988·23 cites·9 claims
- 4366US5578847ADynamic semiconductor memory device with higher density bit line/word line layoutTOSHIBA KK·Filed 1995·Granted Nov 26, 1996·23 cites·14 claims
- 4465US5250830ADynamic type semiconductor memory device and its manufacturing methodTOSHIBA KK·Filed 1991·Granted Oct 5, 1993·20 cites·10 claims
- 4564US5043298AProcess for manufacturing a DRAM cellTOSHIBA KK·Filed 1990·Granted Aug 27, 1991·23 cites·14 claims
- 4663US5106774AMethod of making trench type dynamic random access memory deviceTOSHIBA KK·Filed 1991·Granted Apr 21, 1992·22 cites·13 claims
- 4762US7755134B2Nonvolatile semiconductor memory deviceTOSHIBA KK·Filed 2007·Granted Jul 13, 2010·2 cites·6 claims
- 4858US7759255B2Semiconductor device and method for manufacturing the sameTOSHIBA KK·Filed 2006·Granted Jul 20, 2010·1 cites·7 claims
- 4954US6232822B1Semiconductor device including a bipolar transistor biased to produce a negative base current by the impact ionization mechanismTOSHIBA KK·Filed 1994·Granted May 15, 2001·13 cites·12 claims
- 5054US2008135958A1Magnetic random access memory and manufacturing method of the sameKAJIYAMA TAKESHI·Filed 2007·Application pending·0 cites
Showing the top 50 of 57 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →