Inventor · disambiguated record
Keiichi Higeta
Also filed as: HIGETA KEIICHI
39 granted patents·5 pending applications·621 citations·filing 1986–2008
98Inventor score
Top patents by PatentIndex Score
44 records- 0193US7009862B2Semiconductor deviceHITACHI LTD·Filed 2004·Granted Mar 7, 2006·123 cites·19 claims
- 0293US6445627B1Semiconductor integrated circuitHITACHI LTD·Filed 2001·Granted Sep 3, 2002·60 cites·9 claims
- 0391US6717877B2Semiconductor integration circuit deviceHITACHI LTD·Filed 2002·Granted Apr 6, 2004·61 cites·15 claims
- 0488US6657887B2Semiconductor memory device having improved noise margin, faster read rate and reduced power consumptionRENESAS TECH CORP·Filed 2002·Granted Dec 2, 2003·36 cites·12 claims
- 0582US6512709B1Semiconductor integrated circuitHITACHI LTD·Filed 2002·Granted Jan 28, 2003·24 cites·6 claims
- 0678US8050333B2Data transfer device of serializer/deserializer systemHITACHI LTD·Filed 2007·Granted Nov 1, 2011·8 cites·9 claims
- 0778US6856574B2Semiconductor memory deviceHITACHI LTD·Filed 2003·Granted Feb 15, 2005·26 cites·14 claims
- 0877US7596010B2Semiconductor memory deviceHITACHI LTD·Filed 2008·Granted Sep 29, 2009·8 cites·10 claims
- 0977US5898636ASemiconductor integrated circuit device with interleaved memory and logic blocksHITACHI LTD·Filed 1994·Granted Apr 27, 1999·27 cites·13 claims
- 1075US6496431B1Semiconductor integrated circuitHITACHI LTD·Filed 2002·Granted Dec 17, 2002·17 cites·6 claims
- 1174US6876573B2Semiconductor memory deviceRENESAS TECH CORP·Filed 2004·Granted Apr 5, 2005·16 cites·30 claims
- 1273US6779144B2Semiconductor integrated circuit device and method of testing itRENESAS TECH CORP·Filed 2001·Granted Aug 17, 2004·20 cites·14 claims
- 1371US6920071B2Semiconductor integrated circuit deviceHITACHI LTD·Filed 2004·Granted Jul 19, 2005·18 cites·8 claims
- 1463US6795368B2Semiconductor integrated circuit deviceRENESAS TECH CORP·Filed 2003·Granted Sep 21, 2004·10 cites·26 claims
- 1560US6075729AHigh-speed static random access memoryHITACHI LTD·Filed 1998·Granted Jun 13, 2000·20 cites·14 claims
- 1658US7009246B2Semiconductor deviceHITACHI LTD·Filed 2004·Granted Mar 7, 2006·8 cites·15 claims
- 1758US6670201B2Manufacturing method of semiconductor deviceHITACHI LTD·Filed 2001·Granted Dec 30, 2003·6 cites·17 claims
- 1858US5351211ASemiconductor integrated circuit device having circuit inspection functionHITACHI LTD·Filed 1993·Granted Sep 27, 1994·22 cites·20 claims
- 1957US6707751B2Semiconductor integrated circuit deviceRENESAS TECH CORP·Filed 2003·Granted Mar 16, 2004·7 cites·12 claims
- 2057US6677782B2Semiconductor integrated circuit and semiconductor logic circuit used in the integrated circuitHITACHI LTD·Filed 2001·Granted Jan 13, 2004·7 cites·2 claims
- 2157US6034912ASemiconductor integrated circuit device and method of manufacturing the sameHITACHI LTD·Filed 1998·Granted Mar 7, 2000·13 cites·34 claims
- 2256US7203081B2Semiconductor memory deviceHITACHI ULSI SYS CO LTD·Filed 2004·Granted Apr 10, 2007·7 cites·8 claims
- 2354US6791895B2Semiconductor memory deviceRENESAS TECH CORP·Filed 2003·Granted Sep 14, 2004·6 cites·8 claims
- 2451US6807115B2Method of testing a semiconductor integrated deviceRENESAS TECH CORP·Filed 2003·Granted Oct 19, 2004·4 cites·3 claims
- 2550US6826109B2Semiconductor integrated circuit device with a RAM macro having two operation modes for receiving an input signal at different timingsHITACHI LTD·Filed 2003·Granted Nov 30, 2004·6 cites·14 claims
- 2647US4926378ABipolar static RAM having two wiring lines for each word lineHITACHI LTD·Filed 1988·Granted May 15, 1990·9 cites·22 claims
- 2744US6727532B2Semiconductor integrated circuit deviceRENESAS TECH CORP·Filed 2002·Granted Apr 27, 2004·4 cites·10 claims
- 2844US6617610B2Semiconductor integrated circuitHITACHI LTD·Filed 2001·Granted Sep 9, 2003·2 cites·14 claims
- 2944US6369617B1Semiconductor integrated circuit and semiconductor logic circuit used in the integrated circuitHITACHI LTD·Filed 1999·Granted Apr 9, 2002·6 cites·4 claims
- 3044US5214302ASemiconductor integrated circuit device forming on a common substrate MISFETs isolated by a field oxide and bipolar transistors isolated by a grooveHITACHI LTD·Filed 1991·Granted May 25, 1993·10 cites·24 claims
- 3142US6998878B2Semiconductor integrated circuit and semiconductor logic circuit used in the integrated circuitHITACHI DEVICE ENG·Filed 2004·Granted Feb 14, 2006·2 cites·14 claims
- 3242US5029127ABipolar SRAM having word lines as vertically stacked pairs of conductive lines parallelly formed with holding current linesHITACHI LTD·Filed 1990·Granted Jul 2, 1991·8 cites·16 claims
- 3342US4809052ASemiconductor memory deviceHITACHI LTD·Filed 1986·Granted Feb 28, 1989·7 cites·17 claims
- 3440US7349231B2Semiconductor memory deviceHITACHI LTD·Filed 2007·Granted Mar 25, 2008·0 cites·5 claims
- 3538US7012848B2Semiconductor integrated circuit deviceRENESAS TECH CORP·Filed 2004·Granted Mar 14, 2006·1 cites·11 claims
- 3638US2006031655A1Computer readable storage medium and semiconductor integrated circuit deviceHITACHI ULSI SYS CO LTD·Filed 2005·Application pending·0 cites
- 3737US7620838B2Semiconductor integrated circuit and image processing system using the sameHITACHI LTD·Filed 2005·Granted Nov 17, 2009·1 cites·10 claims
- 3835US5428312AECL interface circuitHITACHI LTD·Filed 1993·Granted Jun 27, 1995·6 cites·24 claims
- 3934US2003145177A1Computer readable storage medium and semiconductor integrated circuit deviceHITACHI LTD·Filed 2002·Application pending·0 cites
- 4034US2002196053A1Semiconductor integrated circuit and semiconductor logic circuit used in the integrated circuitFiled 2002·Application pending·0 cites
- 4132US2005007170A1Asynchronous control circuit and semiconductor integrated circuit deviceHITACHI LTD·Filed 2004·Application pending·0 cites
- 4232US2004170044A1Semiconductor integrated circuit deviceRENESAS TECH CORP·Filed 2004·Application pending·0 cites
- 4331US5128740ASemiconductor integrated circuit device with isolation grooves and protruding portionsHITACHI LTD·Filed 1989·Granted Jul 7, 1992·2 cites·26 claims
- 4429US5583817ASemiconductor integrated circuit deviceHITACHI LTD·Filed 1995·Granted Dec 10, 1996·3 cites·17 claims
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