Inventor · disambiguated record
Yasuhiro Takai
Also filed as: TAKAI YASUHIRO
83 granted patents·11 pending applications·1,112 citations·filing 1985–2024
99Inventor score
Top patents by PatentIndex Score
94 records- 0197US7271638B2Delay circuit and delay synchronization loop deviceELPIDA MEMORY INC·Filed 2006·Granted Sep 18, 2007·30 cites·5 claims
- 0296US7348823B2Delay circuit and delay synchronization loop deviceELPIDA MEMORY INC·Filed 2006·Granted Mar 25, 2008·28 cites·12 claims
- 0395US7839191B2DLL circuitELPIDA MEMORY INC·Filed 2009·Granted Nov 23, 2010·28 cites·11 claims
- 0495US7327176B2Delay circuit and delay synchronization loop deviceELPIDA MEMORY INC·Filed 2006·Granted Feb 5, 2008·23 cites·14 claims
- 0593US6069508AClock generating circuit having high resolution of delay time between external clock signal and internal clock signalNEC CORP·Filed 1998·Granted May 30, 2000·90 cites·31 claims
- 0693US5426606ASemiconductor memory device synchronous with external clock signal for outputting data bits through a small number of data linesNEC CORP·Filed 1994·Granted Jun 20, 1995·87 cites·3 claims
- 0791US7778556B2Toner supply device, image forming apparatus and toner shortage detecting methodSHARP KK·Filed 2007·Granted Aug 17, 2010·13 cites·14 claims
- 0891US6750688B2Semiconductor integrated circuit device and delay-locked loop deviceELPIDA MEMORY INC·Filed 2002·Granted Jun 15, 2004·62 cites·33 claims
- 0990US7536122B2Toner supply device, image forming apparatus and toner supplying methodSHARP KK·Filed 2007·Granted May 19, 2009·11 cites·27 claims
- 1090US7464930B2Sheet stacking device and image forming apparatus including the sameSHARP KK·Filed 2007·Granted Dec 16, 2008·13 cites·13 claims
- 1189US7135906B2Delay circuit and delay synchronization loop deviceELPIDA MEMORY INC·Filed 2004·Granted Nov 14, 2006·26 cites·8 claims
- 1288US10403335B1Systems and methods for a centralized command address input bufferMICRON TECHNOLOGY INC·Filed 2018·Granted Sep 3, 2019·7 cites·18 claims
- 1388US5592270ADeveloping device in an electrophotographic apparatus capable of controlling a discharge of deteriorated developer and method of discharging deteriorated developerSHARP KK·Filed 1993·Granted Jan 7, 1997·38 cites·42 claims
- 1487US6456155B2Differential amplifier circuit with offset circuitNEC CORP·Filed 2001·Granted Sep 24, 2002·38 cites·9 claims
- 1585US5430532ADeveloping device with a tilt detecting function designed for a trickle systemSHARP KK·Filed 1994·Granted Jul 4, 1995·32 cites·20 claims
- 1685US5040028AImage forming apparatus with a toner transfer deviceSHARP KK·Filed 1990·Granted Aug 13, 1991·37 cites·7 claims
- 1784US11251796B2Phase lock circuitry using frequency detectionMICRON TECHNOLOGY INC·Filed 2020·Granted Feb 15, 2022·2 cites·18 claims
- 1884US6738594B2Color image forming apparatus and control method thereofSHARP KK·Filed 2002·Granted May 18, 2004·27 cites·37 claims
- 1983US9431094B1Input bufferMICRON TECHNOLOGY INC·Filed 2016·Granted Aug 30, 2016·6 cites·20 claims
- 2083US6373307B1Semiconductor integrated circuitNEC CORP·Filed 2000·Granted Apr 16, 2002·38 cites·22 claims
- 2183USRE35934ESemiconductor memory device synchronous with external clock signal for outputting data bits through a small number of data linesNEC CORP·Filed 1997·Granted Oct 27, 1998·48 cites·4 claims
- 2282US4905051AFixing means for electrophotographic copierSHARP KK·Filed 1988·Granted Feb 27, 1990·26 cites·6 claims
- 2381US7650087B2Control method of driving toner containers and image forming apparatusSHARP KK·Filed 2007·Granted Jan 19, 2010·6 cites·14 claims
- 2480US5550784ASemiconductor memory device with synchronous dram whose speed grade is not limitedNEC CORP·Filed 1995·Granted Aug 27, 1996·47 cites·3 claims
- 2580US5548385ADeveloper device that gradually replaces degraded developer with fresh developerSHARP KK·Filed 1993·Granted Aug 20, 1996·25 cites·20 claims
- 2679US9047927B2Semiconductor device latching data signal in response to strobe signal and information processing system including the sameTAKAI YASUHIRO·Filed 2012·Granted Jun 2, 2015·7 cites·20 claims
- 2778US7950648B2Feeding device and image forming apparatusSHARP KK·Filed 2008·Granted May 31, 2011·6 cites·14 claims
- 2878US6674314B2Interpolating circuit, DLL circuit and semiconductor integrated circuitELPIDA MEMORY INC·Filed 2002·Granted Jan 6, 2004·25 cites·22 claims
- 2977US7903492B2Semiconductor deviceELPIDA MEMORY INC·Filed 2008·Granted Mar 8, 2011·6 cites·20 claims
- 3077US7719370B2Voltage controlled oscillatorELPIDA MEMORY INC·Filed 2008·Granted May 18, 2010·8 cites·10 claims
- 3177US7403738B2Developer collecting apparatus and image forming apparatus having the sameSHARP KK·Filed 2006·Granted Jul 22, 2008·5 cites·7 claims
- 3276US7944262B2Duty correction circuitELPIDA MEMORY INC·Filed 2009·Granted May 17, 2011·8 cites·16 claims
- 3374US9384819B2Semiconductor device latching data signal in response to strobe signal and information processing system including the samePS4 LUXCO SARL·Filed 2015·Granted Jul 5, 2016·3 cites·17 claims
- 3474US7669844B2Paper feederSHARP KK·Filed 2005·Granted Mar 2, 2010·5 cites·18 claims
- 3574US7609984B2Fixing deviceSHARP KK·Filed 2007·Granted Oct 27, 2009·4 cites·11 claims
- 3673US8988952B2Semiconductor device having ODT functionPS4 LUXCO SARL·Filed 2012·Granted Mar 24, 2015·4 cites·20 claims
- 3772US10872643B2Systems and methods for a centralized command address input bufferMICRON TECHNOLOGY INC·Filed 2019·Granted Dec 22, 2020·2 cites·21 claims
- 3871US6144617ASynchronous semiconductor storage deviceNEC CORP·Filed 2000·Granted Nov 7, 2000·19 cites·10 claims
- 3970US7881622B2Image forming apparatusSHARP KK·Filed 2006·Granted Feb 1, 2011·4 cites·3 claims
- 4070US7660544B2Image forming apparatusSHARP KK·Filed 2007·Granted Feb 9, 2010·3 cites·9 claims
- 4169US8205883B2Paper transport path of image forming apparatusFUJITA MASAHIKO·Filed 2008·Granted Jun 26, 2012·4 cites·10 claims
- 4269US5041878AMethod for forming and transferring color imagesSHARP KK·Filed 1989·Granted Aug 20, 1991·15 cites·21 claims
- 4368US7734243B2Image forming apparatusSHARP KK·Filed 2006·Granted Jun 8, 2010·3 cites·14 claims
- 4468US7719921B2Duty detection circuit, DLL circuit using the same, semiconductor memory circuit, and data processing systemELPIDA MEMORY INC·Filed 2008·Granted May 18, 2010·6 cites·18 claims
- 4568US7642826B2DLL circuit and semiconductor device having the sameELPIDA MEMORY INC·Filed 2007·Granted Jan 5, 2010·6 cites·20 claims
- 4668US7519306B2Fixing apparatus and image forming apparatus including priority temperature controlSHARP KK·Filed 2007·Granted Apr 14, 2009·3 cites·6 claims
- 4768US7257343B2Image forming apparatus performing post treatment accompanied with perforationSHARP KK·Filed 2005·Granted Aug 14, 2007·3 cites·18 claims
- 4867US7561840B2Transfer endless belt device applied to image forming apparatusSHARP KK·Filed 2004·Granted Jul 14, 2009·10 cites·21 claims
- 4965US7750712B2Timing control circuit, timing generation system, timing control method and semiconductor memory deviceELPIDA MEMORY INC·Filed 2008·Granted Jul 6, 2010·5 cites·19 claims
- 5065US7622960B2Metastable-resistant phase comparing circuitELPIDA MEMORY INC·Filed 2008·Granted Nov 24, 2009·3 cites·4 claims
Showing the top 50 of 94 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →