Inventor · disambiguated record
Takayuki Kawahara
Also filed as: KAWAHARA TAKAYUKI
133 granted patents·16 pending applications·3,895 citations·filing 1986–2015
99Inventor score
Files withHITACHI LTD67RENESAS TECH CORP35KAWAHARA TAKAYUKI8RENESAS ELECTRONICS CORP8TAKEMURA RIICHIRO3
Top patents by PatentIndex Score
149 records- 0199US7808045B2Semiconductor device and semiconductor integrated circuit using the sameRENESAS ELECTRONICS CORP·Filed 2010·Granted Oct 5, 2010·110 cites·2 claims
- 0299US7336526B2Semiconductor deviceRENESAS TECH CORP·Filed 2006·Granted Feb 26, 2008·137 cites·8 claims
- 0399US5583457ASemiconductor integrated circuit device having power reduction mechanismHITACHI LTD·Filed 1994·Granted Dec 10, 1996·251 cites·71 claims
- 0498US7498637B2Semiconductor memoryRENESAS TECH CORP·Filed 2005·Granted Mar 3, 2009·122 cites·3 claims
- 0597US6285597B2Semiconductor integrated circuit and data processing systemHITACHI LTD·Filed 2000·Granted Sep 4, 2001·94 cites·6 claims
- 0697US5614847ASemiconductor integrated circuit device having power reduction mechanismHITACHI LTD·Filed 1994·Granted Mar 25, 1997·140 cites·29 claims
- 0797US5197033ASemiconductor device incorporating internal power supply for compensating for deviation in operating condition and fabrication process conditionsHITACHI LTD·Filed 1991·Granted Mar 23, 1993·75 cites·26 claims
- 0896US7385436B2Fully depleted silicon on insulator semiconductor devicesHITACHI LTD·Filed 2007·Granted Jun 10, 2008·33 cites·7 claims
- 0996US7245532B2Nonvolatile semiconductor memory device which stores multi-value informationRENESAS TECH CORP·Filed 2006·Granted Jul 17, 2007·34 cites·7 claims
- 1096US6496418B2Semiconductor integrated circuit and data processing systemHITACHI LTD·Filed 2001·Granted Dec 17, 2002·89 cites·4 claims
- 1196US5426603ADynamic RAM and information processing system using the sameHITACHI LTD·Filed 1994·Granted Jun 20, 1995·164 cites·14 claims
- 1295US9257483B2Magnetic memory, method of manufacturing the same, and method of driving the sameISHIGAKI TAKASHI·Filed 2011·Granted Feb 9, 2016·37 cites·12 claims
- 1395US7732864B2Semiconductor device and semiconductor integrated circuit using the sameRENESAS TECH CORP·Filed 2006·Granted Jun 8, 2010·28 cites·11 claims
- 1495US5274601ASemiconductor integrated circuit having a stand-by current reducing circuitHITACHI LTD·Filed 1992·Granted Dec 28, 1993·150 cites·28 claims
- 1595US4999519ASemiconductor circuit with low power consumption having emitter-coupled logic or differential amplifierHITACHI VLSI ENG·Filed 1988·Granted Mar 12, 1991·165 cites·15 claims
- 1694US7312640B2Semiconductor integrated circuit device having power reduction mechanismRENESAS TECH CORP·Filed 2005·Granted Dec 25, 2007·18 cites·6 claims
- 1794US7206216B2Semiconductor device with a non-erasable memory and/or a nonvolatile memoryRENESAS TECH CORP·Filed 2005·Granted Apr 17, 2007·33 cites·26 claims
- 1894US6134148ASemiconductor integrated circuit and data processing systemHITACHI LTD·Filed 1999·Granted Oct 17, 2000·78 cites·14 claims
- 1994US6091640ASemiconductor integrated circuit with multiple write operation modesHITACHI LTD·Filed 1997·Granted Jul 18, 2000·129 cites·40 claims
- 2093US8508283B2Semiconductor device with back-gate voltage control of a logic circuitKAWAHARA TAKAYUKI·Filed 2011·Granted Aug 13, 2013·13 cites·4 claims
- 2193US7943996B2Semiconductor device and semiconductor integrated circuit using the sameRENESAS ELECTRONICS CORP·Filed 2010·Granted May 17, 2011·12 cites·3 claims
- 2293US7750668B2Semiconductor integrated circuit device having power reduction mechanismRENESAS TECH CORP·Filed 2007·Granted Jul 6, 2010·13 cites·7 claims
- 2393US6785165B2Semiconductor deviceRENESAS TECH CORP·Filed 2002·Granted Aug 31, 2004·71 cites·16 claims
- 2493US6459621B1Semiconductor integrated circuit and data processing systemHITACHI LTD·Filed 2001·Granted Oct 1, 2002·55 cites·31 claims
- 2593US5870218ANonvolatile semiconductor memory device which stores multi-value informationHITAACHI LTD·Filed 1997·Granted Feb 9, 1999·84 cites·40 claims
- 2692US7596014B2Semiconductor deviceHITACHI LTD·Filed 2007·Granted Sep 29, 2009·20 cites·11 claims
- 2792US5880604ASemiconductor integrated circuit device having power reduction mechanismHITACHI LTD·Filed 1996·Granted Mar 9, 1999·79 cites·57 claims
- 2892US4730132ASemiconductor device having bipolar transistor and insulated gate field effect transistor with two potential power sourceHITACHI LTD·Filed 1986·Granted Mar 8, 1988·55 cites·12 claims
- 2991US7224629B2Memory device having high speed sense amplifier comprising pull-up circuit and pull-down circuits with different drivability for eachHITACHI LTD·Filed 2005·Granted May 29, 2007·18 cites·15 claims
- 3091US6696865B2Semiconductor integrated circuit device having power reduction mechanismHITACHI LTD·Filed 2002·Granted Feb 24, 2004·32 cites·4 claims
- 3191US5982667ANonvolatile semiconductor memory device for storing multivalue information by controlling erase and plural write states of each memory cellHITACHI LTD·Filed 1998·Granted Nov 9, 1999·55 cites·28 claims
- 3290US6396736B1Nonvolatile semiconductor memory device which stores multi-value informationHITACHI LTD·Filed 2000·Granted May 28, 2002·35 cites·13 claims
- 3390US5377156ASemiconductor device incorporating main and stand-by boosted internal power supply for compensating for deviation on operating condition and fabrication process conditionsHITACHI LTD·Filed 1992·Granted Dec 27, 1994·36 cites·7 claims
- 3490US5086238ASemiconductor supply incorporating internal power supply for compensating for deviation in operating condition and fabrication process conditionsHITACHI LTD·Filed 1990·Granted Feb 4, 1992·57 cites·14 claims
- 3589US8199596B2Semiconductor memory device having a plurality of sense amplifier circuitsAKIYAMA SATORU·Filed 2010·Granted Jun 12, 2012·10 cites·19 claims
- 3689US5822267ASemiconductor device incorporating internal power supply for compensating for deviation in operating condition and fabrication process conditionsHITACHI LTD·Filed 1994·Granted Oct 13, 1998·31 cites·49 claims
- 3787US7492655B2Memory device having high speed sense amplifier comprising pull-up circuit and pull-down circuits with drivability for eachHITACHI LTD·Filed 2007·Granted Feb 17, 2009·13 cites·10 claims
- 3887US7443718B2Magnetic memory deviceHITACHI LTD·Filed 2006·Granted Oct 28, 2008·18 cites·19 claims
- 3987US6363029B1Semiconductor device incorporating internal power supply for compensating for deviation in operating condition and fabrication process conditionsHITACHI LTD·Filed 2000·Granted Mar 26, 2002·26 cites·13 claims
- 4087US6181603B1Nonvolatile semiconductor memory device having plural memory cells which store multi-value informationHITACHI LTD·Filed 1999·Granted Jan 30, 2001·42 cites·28 claims
- 4187US6026014ANonvolatile semiconductor memory and read methodHITACHI LTD·Filed 1997·Granted Feb 15, 2000·47 cites·37 claims
- 4287US4837462ASemiconductor decoder circuit having switching means for preventing counterflowHITACHI LTD·Filed 1987·Granted Jun 6, 1989·34 cites·6 claims
- 4386US7394697B2Nonvolatile semiconductor memory device which stores multi-value informationRENESAS TECH CORP·Filed 2006·Granted Jul 1, 2008·10 cites·7 claims
- 4486US7356659B2Nonvolatile semiconductor memory and method of managing information in information distribution systemRENESAS TECH CORP·Filed 2005·Granted Apr 8, 2008·15 cites·12 claims
- 4586US6163485ASemiconductor integrated circuit data processing systemHITACHI LTD·Filed 2000·Granted Dec 19, 2000·29 cites·26 claims
- 4686US4984202ALow voltage-operated semiconductor integrated circuitHITACHI LTD·Filed 1990·Granted Jan 8, 1991·58 cites·15 claims
- 4785US7633315B2Semiconductor integrated circuit deviceRENESAS TECH CORP·Filed 2006·Granted Dec 15, 2009·14 cites·19 claims
- 4885US7511558B2Semiconductor devices utilizing double gated fully depleted silicon on insulator MOS transistorsHITACHI LTD·Filed 2006·Granted Mar 31, 2009·12 cites·21 claims
- 4985US6970391B2Semiconductor device incorporating internal power supply for compensating for deviation in operating condition and fabrication process conditionsRENESAS TECH CORP·Filed 2003·Granted Nov 29, 2005·20 cites·3 claims
- 5085US5828235ASemiconductor integrated circuit device having power reduction mechanismHITACHI LTD·Filed 1996·Granted Oct 27, 1998·34 cites·36 claims
Showing the top 50 of 149 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Takayuki Kawahara files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →