Inventor · disambiguated record
Kazuhiko Shimakawa
Also filed as: SHIMAKAWA KAZUHIKO
66 granted patents·1 pending application·1,083 citations·filing 1999–2015
99Inventor score
Top patents by PatentIndex Score
67 records- 0198US9378817B2Variable resistance nonvolatile memory element writing method and variable resistance nonvolatile memory deviceKAWAI KEN·Filed 2012·Granted Jun 28, 2016·88 cites·18 claims
- 0298US7990754B2Resistance variable memory apparatusPANASONIC CORP·Filed 2008·Granted Aug 2, 2011·77 cites·19 claims
- 0397US8154909B2Resistance variable memory apparatusAZUMA RYOTARO·Filed 2011·Granted Apr 10, 2012·42 cites·4 claims
- 0497US8022502B2Nonvolatile memory element, manufacturing method thereof, and nonvolatile semiconductor apparatus using the nonvolatile memory elementPANASONIC CORP·Filed 2008·Granted Sep 20, 2011·60 cites·23 claims
- 0597US7920408B2Resistance change nonvolatile memory devicePANASONIC CORP·Filed 2008·Granted Apr 5, 2011·66 cites·15 claims
- 0696US9251896B2Variable resistance nonvolatile memory device and method for writing into the samePANASONIC CORP·Filed 2014·Granted Feb 2, 2016·34 cites·18 claims
- 0795US8953363B2Nonvolatile semiconductor memory device and read method for the sameSHIMAKAWA KAZUHIKO·Filed 2012·Granted Feb 10, 2015·28 cites·13 claims
- 0895US8885387B2Cross point variable resistance nonvolatile memory devicePANASONIC CORP·Filed 2012·Granted Nov 11, 2014·16 cites·18 claims
- 0995US8848421B2Forming method of performing forming on variable resistance nonvolatile memory element, and variable resistance nonvolatile memory deviceKAWAI KEN·Filed 2011·Granted Sep 30, 2014·29 cites·25 claims
- 1095US8395925B2Forming method for variable resistance nonvolatile memory element, and variable resistance nonvolatile memory deviceKAWAI KEN·Filed 2010·Granted Mar 12, 2013·27 cites·18 claims
- 1195US8305795B2Nonvolatile variable resistance memory element writing method, and nonvolatile variable resistance memory deviceAZUMA RYOTARO·Filed 2010·Granted Nov 6, 2012·21 cites·25 claims
- 1294US8848424B2Variable resistance nonvolatile memory device, and accessing method for variable resistance nonvolatile memory devicePANASONIC CORP·Filed 2012·Granted Sep 30, 2014·24 cites·10 claims
- 1393US7911824B2Nonvolatile memory apparatusPANASONIC CORP·Filed 2008·Granted Mar 22, 2011·30 cites·12 claims
- 1492US9064573B2Writing method of variable resistance non-volatile memory element and variable resistance non-volatile memory devicePANASONIC CORP·Filed 2014·Granted Jun 23, 2015·15 cites·22 claims
- 1592US8902629B2Forming method of performing forming on variable resistance nonvolatile memory element, and variable resistance nonvolatile memory deviceKAWAI KEN·Filed 2011·Granted Dec 2, 2014·18 cites·21 claims
- 1692US8445319B2Nonvolatile memory element, manufacturing method thereof, and nonvolatile semiconductor apparatus using the nonvolatile memory elementKANZAWA YOSHIHIKO·Filed 2011·Granted May 21, 2013·15 cites·4 claims
- 1792US7916516B2Nonvolatile memory apparatus and method for writing data in nonvolatile memory apparatusPANASONIC CORP·Filed 2008·Granted Mar 29, 2011·18 cites·13 claims
- 1891US8848426B2Cross-point variable resistance nonvolatile memory device and reading method for cross-point variable resistance nonvolatile memory devicePANASONIC CORP·Filed 2013·Granted Sep 30, 2014·15 cites·17 claims
- 1991US8441839B2Cross point variable resistance nonvolatile memory deviceAZUMA RYOTARO·Filed 2011·Granted May 14, 2013·16 cites·29 claims
- 2091US8325508B2Writing method for variable resistance nonvolatile memory element, and variable resistance nonvolatile memory deviceKAWAI KEN·Filed 2010·Granted Dec 4, 2012·16 cites·10 claims
- 2191US8094485B2Variable resistance nonvolatile storage device with oxygen-deficient oxide layer and asymmetric substrate bias effectSHIMAKAWA KAZUHIKO·Filed 2008·Granted Jan 10, 2012·22 cites·21 claims
- 2290US8467229B2Variable resistance nonvolatile memory deviceIKEDA YUICHIRO·Filed 2011·Granted Jun 18, 2013·16 cites·11 claims
- 2390US8233311B2Variable resistance nonvolatile storage device having a source line formed of parallel wiring layers connected to each other through viasSHIMAKAWA KAZUHIKO·Filed 2011·Granted Jul 31, 2012·11 cites·3 claims
- 2488US8198618B2Nonvolatile memory device and manufacturing method thereofMIKAWA TAKUMI·Filed 2008·Granted Jun 12, 2012·14 cites·10 claims
- 2588US7965539B2Nonvolatile memory element, nonvolatile semiconductor memory apparatus, and reading method and writing method thereforPANASONIC CORP·Filed 2008·Granted Jun 21, 2011·13 cites·15 claims
- 2687US9336881B2Variable resistance nonvolatile memory device including a variable resistance layer that changes reversibly between a low resistance state and a high resistance state according to an applied electrical signalPANASONIC IP MAN CO LTD·Filed 2015·Granted May 10, 2016·9 cites·20 claims
- 2787US8125818B2Method of programming variable resistance element and variable resistance memory device using the sameMURAOKA SHUNSAKU·Filed 2009·Granted Feb 28, 2012·12 cites·11 claims
- 2887US5933364ASemiconductor device with a metal layer for supplying a predetermined potential to a memory cell sectionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Aug 3, 1999·70 cites·7 claims
- 2986US8384061B2Nonvolatile memory device and manufacturing methodPANASONIC CORP·Filed 2008·Granted Feb 26, 2013·11 cites·10 claims
- 3086US8148711B2Nonvolatile memory element, manufacturing method thereof, and nonvolatile semiconductor apparatus using nonvolatile memory elementFUJII SATORU·Filed 2008·Granted Apr 3, 2012·14 cites·15 claims
- 3185US9001557B2Variable resistance nonvolatile memory element writing method and variable resistance nonvolatile memory devicePANASONIC IP MAN CO LTD·Filed 2012·Granted Apr 7, 2015·9 cites·10 claims
- 3285US8867259B2Method of programming variable resistance nonvolatile memory elementKAWAI KEN·Filed 2012·Granted Oct 21, 2014·10 cites·14 claims
- 3385US8441837B2Variable resistance nonvolatile memory deviceIKEDA YUUICHIROU·Filed 2010·Granted May 14, 2013·12 cites·38 claims
- 3484US9053788B2Cross-point variable resistance nonvolatile memory devicePANASONIC IP MAN CO LTD·Filed 2013·Granted Jun 9, 2015·9 cites·19 claims
- 3584US8982603B2Cross point variable resistance nonvolatile memory device and method of reading therebyAZUMA RYOTARO·Filed 2012·Granted Mar 17, 2015·9 cites·16 claims
- 3684US8094481B2Resistance variable memory apparatusKATOH YOSHIKAZU·Filed 2008·Granted Jan 10, 2012·16 cites·13 claims
- 3783US8787070B2Reference cell circuit and variable resistance nonvolatile memory device including the sameSHIMAKAWA KAZUHIKO·Filed 2012·Granted Jul 22, 2014·9 cites·24 claims
- 3882US8837200B2Nonvolatile semiconductor memory device and read method for the sameTSUJI KIYOTAKA·Filed 2012·Granted Sep 16, 2014·8 cites·24 claims
- 3981US9484090B2Read and write methods for a resistance change non-volatile memory devicePANASONIC IP MAN CO LTD·Filed 2015·Granted Nov 1, 2016·4 cites·5 claims
- 4081US7920402B2Resistance variable memory apparatusPANASONIC CORP·Filed 2007·Granted Apr 5, 2011·13 cites·8 claims
- 4180US8102696B2Nonvolatile memory device and method of writing data to nonvolatile memory deviceKATOH YOSHIKAZU·Filed 2008·Granted Jan 24, 2012·13 cites·8 claims
- 4279US8923032B2Crosspoint nonvolatile memory device and forming method thereofPANASONIC CORP·Filed 2012·Granted Dec 30, 2014·7 cites·11 claims
- 4379US8472238B2Variable resistance nonvolatile storage device with oxygen-deficient oxide layer and asymmetric substrate bias effectSHIMAKAWA KAZUHIKO·Filed 2012·Granted Jun 25, 2013·5 cites·19 claims
- 4477US8553444B2Variable resistance nonvolatile storage device and method of forming memory cellMURAOKA SHUNSAKU·Filed 2009·Granted Oct 8, 2013·9 cites·26 claims
- 4577US8179714B2Nonvolatile storage device and method for writing into memory cell of the sameTAKAGI TAKESHI·Filed 2009·Granted May 15, 2012·10 cites·15 claims
- 4675US8699261B2Variable resistance nonvolatile memory device and driving method thereofTOMOTANI HIROSHI·Filed 2012·Granted Apr 15, 2014·6 cites·15 claims
- 4775US8675387B2Variable resistance nonvolatile memory device and programming method for sameIKEDA YUICHIRO·Filed 2010·Granted Mar 18, 2014·6 cites·19 claims
- 4875US8625328B2Variable resistance nonvolatile storage deviceTOMOTANI HIROSHI·Filed 2010·Granted Jan 7, 2014·6 cites·21 claims
- 4974US9053787B2Crosspoint nonvolatile memory device and method of driving the samePANASONIC IP MAN CO LTD·Filed 2013·Granted Jun 9, 2015·5 cites·14 claims
- 5073US8467228B2Variable resistance nonvolatile memory deviceIKEDA YUICHIRO·Filed 2011·Granted Jun 18, 2013·4 cites·5 claims
Showing the top 50 of 67 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →