Inventor · disambiguated record
Hiroyuki Kawai
Also filed as: KAWAI HIROYUKI
100 granted patents·27 pending applications·2,115 citations·filing 1977–2025
99Inventor score
Top patents by PatentIndex Score
127 records- 0198US4953128AVariable delay circuit for delaying input dataMITSUBISHI ELECTRIC CORP·Filed 1987·Granted Aug 28, 1990·177 cites·9 claims
- 0295US5835822AImage-forming apparatus comprising a process unitFUJITSU LTD·Filed 1996·Granted Nov 10, 1998·61 cites·15 claims
- 0394US6922212B2Portable electronic device having a rotatable cameraFUJITSU LTD·Filed 2003·Granted Jul 26, 2005·136 cites·19 claims
- 0493US5640436AMethod and apparatus for X-ray computed tomographyHITACHI MEDICAL CORP·Filed 1996·Granted Jun 17, 1997·164 cites·30 claims
- 0591US7125258B2Card-type terminalFUJITSU LTD·Filed 2004·Granted Oct 24, 2006·72 cites·8 claims
- 0688US4936185AElectronic musical instrument having plural component blocksYAMAHA CORP·Filed 1987·Granted Jun 26, 1990·58 cites·16 claims
- 0785US6142026AWheel information estimating apparatusTOYOTA MOTOR CO LTD·Filed 1995·Granted Nov 7, 2000·50 cites·14 claims
- 0885US5826207ADevice for estimating air pressure of tire from vibration components of vehicle wheel speedTOYOTA MOTOR CO LTD·Filed 1995·Granted Oct 20, 1998·53 cites·10 claims
- 0985US5366832ASeparator for alkaline batteriesKURARAY CO·Filed 1993·Granted Nov 22, 1994·80 cites·10 claims
- 1085US5365454ALayout designing method for a semiconductor integrated circuit deviceMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Nov 15, 1994·111 cites·5 claims
- 1185US4869701AElectrical educational toyYAMAHA CORP·Filed 1987·Granted Sep 26, 1989·88 cites·8 claims
- 1284US7754387B2Separator for battery and alkaline batteryKURARAY CO·Filed 2005·Granted Jul 13, 2010·9 cites·14 claims
- 1383US6820107B1Square root extraction circuit and floating-point square root extraction deviceRENESAS TECH CORP·Filed 2000·Granted Nov 16, 2004·38 cites·3 claims
- 1483US4877974AClock generator which generates a non-overlap clock having fixed pulse width and changeable frequencyMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Oct 31, 1989·31 cites·5 claims
- 1582US2025376566A1Surface-modified fibers, reinforcing fibers, and molded article using sameKURARAY CO·Filed 2025·Application pending·0 cites
- 1681US9142816B2Alkaline battery separator and alkaline battery using separatorHAYAKAWA TOMOHIRO·Filed 2011·Granted Sep 22, 2015·4 cites·9 claims
- 1781US6675251B1Bridge device for connecting multiple devices to one slotRENESAS TECH CORP·Filed 2000·Granted Jan 6, 2004·32 cites·20 claims
- 1880US7014781B2Methods and articles for maintaining hydantoinylated polymers in a biocidally active stateVANSON HALOSOURCE INC·Filed 2005·Granted Mar 21, 2006·2 cites·11 claims
- 1980US5512975AHeat exhaust duct for image forming apparatus operable in a vertical or horizontal positionFUJITSU LTD·Filed 1994·Granted Apr 30, 1996·22 cites·21 claims
- 2079US10461294B2Separator for alkaline batteries, and alkaline battery using sameKURARAY CO·Filed 2016·Granted Oct 29, 2019·1 cites·16 claims
- 2179US8865336B2Separator for alkaline battery, method for producing the same, and batteryHAYAKAWA TOMOHIRO·Filed 2007·Granted Oct 21, 2014·4 cites·18 claims
- 2279US5673422ASemiconductor integrated circuit for processing image dataMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Sep 30, 1997·72 cites·40 claims
- 2379US5531110AMethod and apparatus for estimating disturbance acting on vehicle tired wheel based on wheel angular velocity and equation of stateTOYOTA MOTOR CO LTD·Filed 1994·Granted Jul 2, 1996·34 cites·26 claims
- 2478US9748543B2Separator for nonaqueous cell and nonaqueous cellKURARAY CO·Filed 2014·Granted Aug 29, 2017·2 cites·15 claims
- 2578US8477480B2Laminate, separator for capacitor, and capacitorHAYAKAWA TOMOHIRO·Filed 2010·Granted Jul 2, 2013·3 cites·11 claims
- 2677US8802271B2Separator for non-aqueous batteries, non-aqueous battery using same, and production method for separator for non-aqueous batteriesHAYAKAWA TOMOHIRO·Filed 2012·Granted Aug 12, 2014·2 cites·16 claims
- 2777US7672408B2Signal separation device and signal separation methodNTT DOCOMO INC·Filed 2005·Granted Mar 2, 2010·7 cites·10 claims
- 2877US5848114AComputerized tomography systemHITACHI MEDICAL CORP·Filed 1997·Granted Dec 8, 1998·68 cites·7 claims
- 2976US8097366B2Alkaline battery separator comprising alkali-resistance synthetic fiber, fibrillated organic solvent-spun cellulose fiber and mercerized pulp, and alkaline primary batteryHARADA TOSHIMITSU·Filed 2006·Granted Jan 17, 2012·5 cites·6 claims
- 3076US7844003B2Signal separating device and signal separating methodNTT DOCOMO INC·Filed 2005·Granted Nov 30, 2010·7 cites·9 claims
- 3175US5584010ADirect memory access control device and method in a multiprocessor system accessing local and shared memoryMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Dec 10, 1996·70 cites·47 claims
- 3274US6480873B1Power operation deviceMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Nov 12, 2002·22 cites·13 claims
- 3373US12435195B2Surface-modified fibers, reinforcing fibers, and molded article using sameKURARAY CO·Filed 2020·Granted Oct 7, 2025·0 cites·12 claims
- 3473US7936838B2Wireless communication system, receiving apparatus, modulating method for use therein, and program thereforNEC CORP·Filed 2005·Granted May 3, 2011·5 cites·114 claims
- 3572US5913241AApparatus for estimating vehicle tire air pressure from not only tired wheel motion but also tire temperatureTOYOTA MOTOR CO LTD·Filed 1997·Granted Jun 15, 1999·32 cites·8 claims
- 3670US8784562B2Carbon nanotube production process and carbon nanotube production apparatusIMANISHI MASAHIRO·Filed 2010·Granted Jul 22, 2014·2 cites·4 claims
- 3770US8391128B2Mobile communication system, receiver and methodHIGUCHI KENICHI·Filed 2009·Granted Mar 5, 2013·4 cites·11 claims
- 3870US7583739B2Channel estimation device, channel estimation method, and wireless receiverNTT DOCOMO INC·Filed 2005·Granted Sep 1, 2009·4 cites·8 claims
- 3968US10668416B2Granular filtration media mixture and uses in water purificationHALOSOURCE INC·Filed 2015·Granted Jun 2, 2020·1 cites·17 claims
- 4068US5051610ASR latch circuitMITSUBISHI ELECTRIC CORP·Filed 1989·Granted Sep 24, 1991·16 cites·15 claims
- 4167US7433965B2Packet transmission system, packet transmission method, packet transmission device, home agent, mobile terminal, and access routerNTT DOCOMO INC·Filed 2003·Granted Oct 7, 2008·11 cites·15 claims
- 4267US2023261214A1Fuel cellTOYOTA MOTOR CO LTD·Filed 2022·Application pending·0 cites
- 4366US11884788B2Reinforcing fiber, method for manufacturing same, and molded body using sameKURARAY CO·Filed 2020·Granted Jan 30, 2024·0 cites·19 claims
- 4466US7864897B2MIMO multiplexing communication system and a signal separation methodNTT DOCOMO INC·Filed 2006·Granted Jan 4, 2011·3 cites·9 claims
- 4566US7054979B2Method and apparatus for routing configuration accesses from a primary port to a plurality of secondary portsRENESAS TECH CORP·Filed 2001·Granted May 30, 2006·11 cites·20 claims
- 4665US10890190B2Magnetic pumpIWAKI CO LTD·Filed 2013·Granted Jan 12, 2021·2 cites·6 claims
- 4765US6795075B1Graphic processor having multiple geometric operation units and method of processing data therebyRENESAS TECH CORP·Filed 2000·Granted Sep 21, 2004·12 cites·28 claims
- 4865US6711601B2Logarithmic arithmetic unit avoiding division as far as predetermined arithmetic precision is guaranteedRENESAS TECH CORP·Filed 2001·Granted Mar 23, 2004·11 cites·18 claims
- 4965US6603481B1Geometry processor capable of executing input/output and high speed geometry calculation processing in parallelMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Aug 5, 2003·38 cites·11 claims
- 5065US5895143AElectrophotographic image-forming apparatusFUJITSU LTD·Filed 1997·Granted Apr 20, 1999·12 cites·2 claims
Showing the top 50 of 127 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →