Inventor · disambiguated record
Kouhei Yamada
Also filed as: YAMADA KOUHEI
31 granted patents·8 pending applications·226 citations·filing 1998–2024
96Inventor score
Files withDENSO CORP7YAMADA KOUHEI7FUJI ELEC DEVICE TECH CO LTD4FUJI ELECTRIC SYSTEMS CO LTD3KAO CORP3
Top patents by PatentIndex Score
39 records- 0190US7901556B2Gas sensor equipped with cover assembly designed to minimize splashing of sensor element with waterDENSO CORP·Filed 2007·Granted Mar 8, 2011·16 cites·12 claims
- 0290US7708869B2Gas sensorDENSO CORP·Filed 2007·Granted May 4, 2010·16 cites·18 claims
- 0390US7492137B2Series regulator and differential amplifier circuit thereofFUJI ELEC DEVICE TECH CO LTD·Filed 2006·Granted Feb 17, 2009·22 cites·4 claims
- 0489US7906942B2Control circuit of DC-DC converter with synchronous rectifier adjusting signal to improve efficiency at light loads and control method thereofFUJI ELECTRIC SYSTEMS CO LTD·Filed 2007·Granted Mar 15, 2011·29 cites·24 claims
- 0587US10231920B2Skin cleansing compositionKAO CORP·Filed 2015·Granted Mar 19, 2019·2 cites·17 claims
- 0684US8253472B2Level shift circuit with noise blocking transmission circuitNISHIJIMA KENICHI·Filed 2010·Granted Aug 28, 2012·8 cites·6 claims
- 0784US6210641B1Air-fuel ratio control system and gas sensor for enginesDENSO CORP·Filed 1998·Granted Apr 3, 2001·45 cites·7 claims
- 0883US8928294B2Step-up switching power supplyFUJI ELECTRIC CO LTD·Filed 2013·Granted Jan 6, 2015·6 cites·13 claims
- 0981US7408390B2DC to DC converter and voltage detecting circuit and current detecting circuit thereofFUJI ELEC DEVICE TECH CO LTD·Filed 2006·Granted Aug 5, 2008·17 cites·12 claims
- 1079US7559229B2Gas sensor with increased water-incursion resistance and method of operating gas sensorDENSO CORP·Filed 2007·Granted Jul 14, 2009·6 cites·14 claims
- 1177US8658425B2Method for promoting differentiation of pluripotent stem cells into cardiac muscle cellsUNIV KYOTO·Filed 2013·Granted Feb 25, 2014·4 cites·15 claims
- 1276US8648624B2Voltage-to-current converter circuitYAMADA KOUHEI·Filed 2012·Granted Feb 11, 2014·5 cites·14 claims
- 1376US8013585B2DC-DC converter and DC-DC power conversion method employing overcurrent protectionFUJI ELECTRIC SYSTEMS CO LTD·Filed 2008·Granted Sep 6, 2011·13 cites·10 claims
- 1474US7872461B2Reverse current stopping circuit of synchronous rectification type DC-DC converterFUJI ELEC DEVICE TECH CO LTD·Filed 2009·Granted Jan 18, 2011·11 cites·7 claims
- 1573US9499790B2Method for promoting differentiation of pluripotent stem cells into cardiac muscle cellsUNIV KYOTO·Filed 2014·Granted Nov 22, 2016·1 cites·4 claims
- 1673US8598914B2Comparator circuit with current mirrorNISHIJIMA KENICHI·Filed 2011·Granted Dec 3, 2013·4 cites·9 claims
- 1770US7812578B2DC-DC converterFUJI ELECTRIC SYSTEMS CO LTD·Filed 2008·Granted Oct 12, 2010·8 cites·17 claims
- 1869US9778291B2AC input voltage interruption detection method and circuitYAMADA KOUHEI·Filed 2012·Granted Oct 3, 2017·2 cites·6 claims
- 1968US7631535B2Method of confirming reception of drops of water and powder used for the methodDENSO CORP·Filed 2007·Granted Dec 15, 2009·2 cites·12 claims
- 2064US8878508B2DC-DC converter control circuit and control methodYAMADA KOUHEI·Filed 2012·Granted Nov 4, 2014·2 cites·8 claims
- 2163US8823351B2Overvoltage threshold control system of DC to DC converterYAMADA KOUHEI·Filed 2012·Granted Sep 2, 2014·2 cites·6 claims
- 2261US2011230603A1Ink compositionTOYO INK MFG CO·Filed 2009·Application pending·0 cites
- 2360US12114624B2Utility work deviceKUBOTA KK·Filed 2019·Granted Oct 15, 2024·0 cites·20 claims
- 2458US12311466B2Welding method and welded memberTOSHIBA KK·Filed 2021·Granted May 27, 2025·0 cites·8 claims
- 2557US11802885B2Sensor processing system, sensor system, and sensor processing methodPANASONIC IP MAN CO LTD·Filed 2020·Granted Oct 31, 2023·0 cites·13 claims
- 2657US2025091860A1Compound sensor and manufacturing methodPANASONIC IP MAN CO LTD·Filed 2024·Application pending·0 cites
- 2757US2015353749A1Ink compositionTOYO INK SC HOLDINGS CO LTD·Filed 2015·Application pending·0 cites
- 2856US2022212286A1Welding method and welding equipmentTOSHIBA KK·Filed 2021·Application pending·0 cites
- 2954US9943709B2Skin cleansing compositionKAO CORP·Filed 2014·Granted Apr 17, 2018·0 cites·18 claims
- 3050US2016106655A1Skin cleansing compositionKAO CORP·Filed 2014·Application pending·0 cites
- 3150US2009020425A1Gas sensorDENSO CORP·Filed 2008·Application pending·0 cites
- 3249US8059437B2Integrated circuit and DC-DC converter formed by using the integrated circuitYAMADA KOUHEI·Filed 2007·Granted Nov 15, 2011·2 cites·6 claims
- 3349US2008209984A1Supporting member for gas sensorDENSO CORP·Filed 2007·Application pending·0 cites
- 3448US7652861B2Overcurrent detecting circuit and reference voltage generating circuitFUJI ELEC DEVICE TECH CO LTD·Filed 2006·Granted Jan 26, 2010·1 cites·15 claims
- 3547US10309003B2Honeycomb structure, and manufacturing method of the sameNGK INSULATORS LTD·Filed 2017·Granted Jun 4, 2019·0 cites·10 claims
- 3646US9124254B2DC-DC converter control method and DC-DC converter control circuitYAMADA KOUHEI·Filed 2012·Granted Sep 1, 2015·0 cites·15 claims
- 3746US8471540B2DC-DC converterYAMADA KOUHEI·Filed 2007·Granted Jun 25, 2013·1 cites·6 claims
- 3845US8174854B2Switching power supply system with reduced current consumption at light loadSUGAHARA SATOSHI·Filed 2008·Granted May 8, 2012·1 cites·12 claims
- 3945US2025179930A1Steam valve and steam turbine plant including thisTOSHIBA KK·Filed 2024·Application pending·0 cites
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