Assignee
ELPIDA MEMORY INC
JP·1,020 granted patents·587 pending applications·10,302 citations·filing 1996–2014
Top patents by PatentIndex Score
1,607 records- 0199US7123497B2Memory module and memory systemELPIDA MEMORY INC·Filed 2004·Granted Oct 17, 2006·220 cites·20 claims
- 0298US8351292B2Semiconductor device and data processing systemELPIDA MEMORY INC·Filed 2011·Granted Jan 8, 2013·410 cites·5 claims
- 0398US7948784B2Semiconductor memory device having vertical transistorsELPIDA MEMORY INC·Filed 2008·Granted May 24, 2011·56 cites·10 claims
- 0498US7808093B2Stacked semiconductor deviceELPIDA MEMORY INC·Filed 2007·Granted Oct 5, 2010·117 cites·21 claims
- 0598US7796453B2Semiconductor deviceELPIDA MEMORY INC·Filed 2008·Granted Sep 14, 2010·410 cites·17 claims
- 0698US7633146B2Semiconductor device and a method of manufacturing the sameELPIDA MEMORY INC·Filed 2008·Granted Dec 15, 2009·79 cites·8 claims
- 0798US7551502B2Semiconductor deviceELPIDA MEMORY INC·Filed 2006·Granted Jun 23, 2009·75 cites·8 claims
- 0898US7327590B2Memory module and memory systemELPIDA MEMORY INC·Filed 2006·Granted Feb 5, 2008·43 cites·7 claims
- 0998US7215128B2Output circuit for semiconductor device, semiconductor device having output circuit, and method of adjusting characteristics of output circuitELPIDA MEMORY INC·Filed 2006·Granted May 8, 2007·57 cites·12 claims
- 1098US7155627B2Memory system and data transmission methodELPIDA MEMORY INC·Filed 2003·Granted Dec 26, 2006·96 cites·11 claims
- 1197US7642635B2Stacked semiconductor packageELPIDA MEMORY INC·Filed 2006·Granted Jan 5, 2010·56 cites·13 claims
- 1297US7502252B2Nonvolatile semiconductor memory device and phase change memory deviceELPIDA MEMORY INC·Filed 2005·Granted Mar 10, 2009·82 cites·10 claims
- 1397US7493531B2Semiconductor memory device and refresh period controlling methodELPIDA MEMORY INC·Filed 2005·Granted Feb 17, 2009·66 cites·8 claims
- 1497US7318183B2Data storing method of dynamic RAM and semiconductor memory deviceELPIDA MEMORY INC·Filed 2006·Granted Jan 8, 2008·56 cites·4 claims
- 1597US7271638B2Delay circuit and delay synchronization loop deviceELPIDA MEMORY INC·Filed 2006·Granted Sep 18, 2007·30 cites·5 claims
- 1696US8913459B2Semiconductor device including plural chips stacked to each otherELPIDA MEMORY INC·Filed 2014·Granted Dec 16, 2014·17 cites·10 claims
- 1796US7768312B2Semiconductor device and driver control methodELPIDA MEMORY INC·Filed 2008·Granted Aug 3, 2010·53 cites·5 claims
- 1896US7697369B2System with controller and memoryELPIDA MEMORY INC·Filed 2007·Granted Apr 13, 2010·39 cites·27 claims
- 1996US7576433B2Semiconductor memory device and manufacturing method thereofELPIDA MEMORY INC·Filed 2006·Granted Aug 18, 2009·38 cites·16 claims
- 2096US7348668B2Semiconductor device and method of manufacturing the sameELPIDA MEMORY INC·Filed 2006·Granted Mar 25, 2008·24 cites·21 claims
- 2196US7348823B2Delay circuit and delay synchronization loop deviceELPIDA MEMORY INC·Filed 2006·Granted Mar 25, 2008·28 cites·12 claims
- 2296US7167403B2Semiconductor storage device and refresh control method thereforELPIDA MEMORY INC·Filed 2005·Granted Jan 23, 2007·45 cites·18 claims
- 2395US8054679B2Phase change memory deviceELPIDA MEMORY INC·Filed 2008·Granted Nov 8, 2011·45 cites·14 claims
- 2495US7839191B2DLL circuitELPIDA MEMORY INC·Filed 2009·Granted Nov 23, 2010·28 cites·11 claims
- 2595US7826305B2Latency counter, semiconductor memory device including the same, and data processing systemELPIDA MEMORY INC·Filed 2008·Granted Nov 2, 2010·40 cites·23 claims
- 2695US7808270B2Output circuit for semiconductor device, semiconductor device having output circuit, and method of adjusting characteristics of output circuitELPIDA MEMORY INC·Filed 2009·Granted Oct 5, 2010·25 cites·11 claims
- 2795US7474550B2Dynamic RAM-and semiconductor deviceELPIDA MEMORY INC·Filed 2007·Granted Jan 6, 2009·23 cites·12 claims
- 2895US7327176B2Delay circuit and delay synchronization loop deviceELPIDA MEMORY INC·Filed 2006·Granted Feb 5, 2008·23 cites·14 claims
- 2995US7323785B2Semiconductor deviceELPIDA MEMORY INC·Filed 2006·Granted Jan 29, 2008·43 cites·19 claims
- 3095US7249289B2Method of deciding error rate and semiconductor integrated circuit deviceELPIDA MEMORY INC·Filed 2004·Granted Jul 24, 2007·93 cites·4 claims
- 3195US7184351B2Semiconductor memory deviceELPIDA MEMORY INC·Filed 2005·Granted Feb 27, 2007·53 cites·10 claims
- 3295US7119428B2Semiconductor deviceELPIDA MEMORY INC·Filed 2004·Granted Oct 10, 2006·109 cites·8 claims
- 3395US7102905B2Stacked memory, memory module and memory systemELPIDA MEMORY INC·Filed 2004·Granted Sep 5, 2006·100 cites·27 claims
- 3494US8378417B2Semiconductor device including a well potential supply device and a vertical MOS transistorELPIDA MEMORY INC·Filed 2010·Granted Feb 19, 2013·20 cites·20 claims
- 3594US8381157B2Semiconductor device, adjustment method thereof and data processing systemELPIDA MEMORY INC·Filed 2012·Granted Feb 19, 2013·12 cites·24 claims
- 3694US8363466B2Nonvolatile semiconductor memory device and method of reading data from nonvolatile semiconductor memory deviceELPIDA MEMORY INC·Filed 2010·Granted Jan 29, 2013·21 cites·34 claims
- 3794US8349709B2Method of layout of patternELPIDA MEMORY INC·Filed 2010·Granted Jan 8, 2013·16 cites·14 claims
- 3894US7952201B2Semiconductor device including stacked semiconductor chipsELPIDA MEMORY INC·Filed 2010·Granted May 31, 2011·13 cites·20 claims
- 3994US7915602B2Phase change memory device and fabrication method thereofELPIDA MEMORY INC·Filed 2009·Granted Mar 29, 2011·34 cites·9 claims
- 4094US7839159B2ZQ calibration circuit and a semiconductor device including a ZQ calibration circuitELPIDA MEMORY INC·Filed 2006·Granted Nov 23, 2010·38 cites·10 claims
- 4194US7582889B2Electrically rewritable non-volatile memory element and method of manufacturing the sameELPIDA MEMORY INC·Filed 2006·Granted Sep 1, 2009·23 cites·13 claims
- 4294US7580277B2Memory device including a programmable resistance elementELPIDA MEMORY INC·Filed 2008·Granted Aug 25, 2009·28 cites·18 claims
- 4394US7576389B2Semiconductor device and manufacture method thereofELPIDA MEMORY INC·Filed 2007·Granted Aug 18, 2009·32 cites·16 claims
- 4494US7567476B2Semiconductor memory device and testing method thereofELPIDA MEMORY INC·Filed 2006·Granted Jul 28, 2009·33 cites·9 claims
- 4594US7531905B2Stacked semiconductor deviceELPIDA MEMORY INC·Filed 2007·Granted May 12, 2009·78 cites·18 claims
- 4694US7508238B2Semiconductor integrated circuit deviceELPIDA MEMORY INC·Filed 2005·Granted Mar 24, 2009·94 cites·20 claims
- 4794US7495453B2Output circuit for semiconductor device, semiconductor device having output circuit, and method of adjusting characteristics of output circuitELPIDA MEMORY INC·Filed 2007·Granted Feb 24, 2009·20 cites·35 claims
- 4894US7489030B2Stacked semiconductor deviceELPIDA MEMORY INC·Filed 2006·Granted Feb 10, 2009·37 cites·13 claims
- 4994US7463529B2Word line driving circuit putting word line into one of high level, low level and high impedanceELPIDA MEMORY INC·Filed 2007·Granted Dec 9, 2008·38 cites·9 claims
- 5094US7411852B2Semiconductor memory device and method of adjusting sameELPIDA MEMORY INC·Filed 2006·Granted Aug 12, 2008·37 cites·12 claims
Showing the top 50 of 1,607 patent records by PatentIndex Score.
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