Inventor · disambiguated record
Masahiko Yamaguchi
Also filed as: YAMAGUCHI MASAHIKO
42 granted patents·6 pending applications·614 citations·filing 1975–2019
98Inventor score
Top patents by PatentIndex Score
48 records- 0193US7677227B2Apparatus and method of abnormality diagnosis for supercharging pressure control systemDENSO CORP·Filed 2006·Granted Mar 16, 2010·30 cites·20 claims
- 0291US5964208AAbnormality diagnosing system for air/fuel ratio feedback control systemDENSO CORP·Filed 1997·Granted Oct 12, 1999·53 cites·34 claims
- 0389US4510513AHeat sensitive record sheetHODOGAYA CHEMICAL CO LTD·Filed 1983·Granted Apr 9, 1985·32 cites·4 claims
- 0487US6463735B2Apparatus for detecting deterioration of exhaust gas purifying catalystsDENSO CORP·Filed 2001·Granted Oct 15, 2002·35 cites·22 claims
- 0584US5438421AOrientation film of liquid crystal having bilaterally asymmetric ridges separated by groovesALPS ELECTRIC CO LTD·Filed 1994·Granted Aug 1, 1995·70 cites·8 claims
- 0682US9425564B2ConnectorHIROSE ELECTRIC CO LTD·Filed 2015·Granted Aug 23, 2016·6 cites·4 claims
- 0782US6314196B1Fingerprint registering method and fingerprint checking deviceFUJITSU DENSO·Filed 1997·Granted Nov 6, 2001·71 cites·3 claims
- 0876US6470674B1Deterioration detecting apparatus and method for engine exhaust gas purifying deviceDENSO CORP·Filed 2000·Granted Oct 29, 2002·33 cites·18 claims
- 0975US6289880B1Apparatus for detecting leakage of vapor purge systemDENSO CORP·Filed 2000·Granted Sep 18, 2001·16 cites·11 claims
- 1072US6963381B2Active matrix display device with asymmetrical reflection, and insulating layer with a corrugated surface and a flat portionALPS ELECTRONIC CO LTD·Filed 2003·Granted Nov 8, 2005·13 cites·11 claims
- 1171US4698632ARadar detectorUNIDEN KK·Filed 1985·Granted Oct 6, 1987·32 cites·8 claims
- 1269US7088224B2Audio information transmitting apparatus and the method thereof, and a vibrator holding structureNAT INST OF ADVANCED IND SCIEN·Filed 2004·Granted Aug 8, 2006·13 cites·14 claims
- 1368US4074050ADiphenyl-1,3-benzoxazine-2-onesHODOGAYA CHEMICAL CO LTD·Filed 1977·Granted Feb 14, 1978·7 cites·4 claims
- 1468US3967835APressure-sensitive copying materialHODOGAYA CHEMICAL CO LTD·Filed 1975·Granted Jul 6, 1976·7 cites·8 claims
- 1564US8118881B2Hair dye and hair dye compositionYAMAGUCHI MASAHIKO·Filed 2008·Granted Feb 21, 2012·2 cites·14 claims
- 1664US6275601B1Fingerprinting judging methodFUJITSU DENSO·Filed 2000·Granted Aug 14, 2001·15 cites·1 claims
- 1762US7885757B2Degradation determination apparatus and degradation determination system for oxygen concentration sensorDENSO CORP·Filed 2009·Granted Feb 8, 2011·4 cites·4 claims
- 1861US6362603B2Battery charging apparatusKOKUSAN DENKI CO·Filed 2001·Granted Mar 26, 2002·19 cites·22 claims
- 1960US10483662B2Connector with L-shaped coaxial terminals and method of manufacture thereofHIROSE ELECTRIC CO LTD·Filed 2019·Granted Nov 19, 2019·1 cites·6 claims
- 2059US5263982AHollow fiber membrane type artificial lungUBE INDUSTRIES·Filed 1991·Granted Nov 23, 1993·24 cites·3 claims
- 2159US4073614AMixture of benzoxazines and benzodioxanes which may be used as color formersHODOGAYA CHEMICAL CO LTD·Filed 1975·Granted Feb 14, 1978·5 cites·1 claims
- 2254US7380448B2Malfunction detection apparatus for pressure sensorDENSO CORP·Filed 2006·Granted Jun 3, 2008·2 cites·18 claims
- 2354US5115329AElectroluminescent device having a liquid crystal layer adjacent to the electroluminescent layer without any electrode placed therebetweenALPS ELECTRIC CO LTD·Filed 1990·Granted May 19, 1992·19 cites·1 claims
- 2454US4912259APentadiene amino compoundHODOGAYA CHEMICAL CO LTD·Filed 1988·Granted Mar 27, 1990·5 cites·6 claims
- 2553US6959088B1Data processing apparatus and method for encryption or decryption of communication dataCANON KK·Filed 2000·Granted Oct 25, 2005·3 cites·6 claims
- 2652US7260928B2Diagnostic device for secondary air supply systemDENSO CORP·Filed 2005·Granted Aug 28, 2007·2 cites·2 claims
- 2752US5995641AFingerprint identification device and method of using sameFUJITSU DENSO·Filed 1996·Granted Nov 30, 1999·27 cites·2 claims
- 2851US4859535APorous hollow-fiberUBE INDUSTRIES·Filed 1988·Granted Aug 22, 1989·16 cites·5 claims
- 2948US10183712B2Walking control method, walking control program and biped walking robotPANASONIC CORP·Filed 2017·Granted Jan 22, 2019·0 cites·16 claims
- 3047US9131609B2Waterproof structure for electronic deviceOCHIAI KAZUYUKI·Filed 2011·Granted Sep 8, 2015·1 cites·9 claims
- 3147US2003171055A1Material for flame-retardant sheetFiled 2001·Application pending·0 cites
- 3246US5041560AFluoran compoundHODOGAYA CHEMICAL CO LTD·Filed 1989·Granted Aug 20, 1991·2 cites·1 claims
- 3345US4364999AHeat sensitive record sheetHODOGAYA CHEMICAL CO LTD·Filed 1981·Granted Dec 21, 1982·4 cites·3 claims
- 3444US7797924B2Abnormality diagnosis apparatus for secondary air supply system of engineDENSO CORP·Filed 2005·Granted Sep 21, 2010·0 cites·22 claims
- 3544US4930877ALiquid crystal displayALPS ELECTRIC CO LTD·Filed 1988·Granted Jun 5, 1990·11 cites·1 claims
- 3643US4612558AFluoran compoundsHODOGAYA CHEMICAL CO LTD·Filed 1985·Granted Sep 16, 1986·4 cites·5 claims
- 3743US2007008464A1Liquid crystal display deviceALPS ELECTRIC CO LTD·Filed 2006·Application pending·0 cites
- 3843US2007013648A1Display element, method of producing display element, and electronic apparatus including display elementALPS ELECTRIC CO LTD·Filed 2006·Application pending·0 cites
- 3942US5130834ALiquid crystal display including a dye complementary to the liquid crystal's bright state colorALPS ELECTRIC CO LTD·Filed 1988·Granted Jul 14, 1992·10 cites·2 claims
- 4040US6303796B1β-diketone compounds β-diketone compounds coordinated to metal, method of organic synthesis with these, and catalystCHISSO CORP·Filed 1999·Granted Oct 16, 2001·1 cites·7 claims
- 4138US2004012726A1Active matrix display deviceALPS ELECTRIC CO LTD·Filed 2003·Application pending·0 cites
- 4235US2010269805A1Exhaust gas sensor heater degradation diagnosis deviceDENSO CORP·Filed 2010·Application pending·0 cites
- 4334US2001036301A1Fingerprint registering method and fingerprint checking deviceFUJITSU DENSO LTD JAPANESE COR·Filed 2001·Application pending·0 cites
- 4432US4987262ACycloalkene compounds useful in recording materialsHODOGAYA CHEMICAL CO LTD·Filed 1989·Granted Jan 22, 1991·3 cites·3 claims
- 4531US5240898AHeat sensitive recording materialHODOGAYA CHEMICAL CO LTD·Filed 1992·Granted Aug 31, 1993·0 cites·6 claims
- 4630US4594601AFluoran compoundsHODOGAYA CHEMICAL CO LTD·Filed 1983·Granted Jun 10, 1986·0 cites·8 claims
- 4727US6122395AFingerprint dictionary image renewing methodFUJITSU DENSO·Filed 1999·Granted Sep 19, 2000·5 cites·5 claims
- 4826US4904234AApparatus for collecting plasmaUBE INDUSTRIES·Filed 1988·Granted Feb 27, 1990·11 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →