Inventor · disambiguated record
Keiichi Nakada
Also filed as: NAKADA KEIICHI
46 granted patents·3 pending applications·761 citations·filing 1997–2015
98Inventor score
Files withHITACHI LTD28HITACHI CAR ENG CO LTD15HANZAWA KEIJI1HITACHI AUTOMOTIVE SYSTEMS LTD1HITACHI LTD AND HITACHI CAR EN1
Top patents by PatentIndex Score
49 records- 0196US6516785B1Air flow sensorHITACHI LTD·Filed 2000·Granted Feb 11, 2003·87 cites·15 claims
- 0295US6557411B1Heating element type mass air flow sensor, and internal combustion engine-control apparatus using the sensorHITACHI LTD·Filed 2000·Granted May 6, 2003·70 cites·16 claims
- 0390US6923053B2Gas flowmeter and manufacturing method thereofHITACHI CAR ENG CO LTD·Filed 2004·Granted Aug 2, 2005·31 cites·7 claims
- 0487US7228614B2Method of manufacturing a gas flow meterHITACHI CAR ENG CO LTD·Filed 2005·Granted Jun 12, 2007·14 cites·1 claims
- 0587US7216535B2Air flow measuring device and engine having the air flow measuring deviceHITACHI CAR ENG CO LTD·Filed 2006·Granted May 15, 2007·11 cites·34 claims
- 0687US6349596B1Thermal type air flow sensorHITACHI LTD·Filed 1999·Granted Feb 26, 2002·58 cites·6 claims
- 0784US6708560B2Measurement apparatus for measuring physical quantity such as fluid flowHITACHI LTD·Filed 2001·Granted Mar 23, 2004·26 cites·10 claims
- 0884US6571621B2Thermal flow rate measuring deviceHITACHI LTD·Filed 2001·Granted Jun 3, 2003·26 cites·12 claims
- 0983US7395707B2Thermal type flow rate measuring apparatusHITACHI LTD·Filed 2006·Granted Jul 8, 2008·9 cites·8 claims
- 1083US7201047B2Air flow measuring deviceHITACHI CAR ENG CO LTD·Filed 2005·Granted Apr 10, 2007·9 cites·11 claims
- 1183US6170567B1Heat exchangerSHOWA ALUMINUM CORP·Filed 1997·Granted Jan 9, 2001·47 cites·14 claims
- 1282US7270000B2Fluid flow sensor and fluid flow measurement deviceHITACHI CAR ENG CO LTD·Filed 2005·Granted Sep 18, 2007·11 cites·20 claims
- 1382US6752014B1Hot-wire type air flow meter for internal combustion engineHITACHI LTD·Filed 2000·Granted Jun 22, 2004·28 cites·33 claims
- 1480US6553829B1Air flow sensor having grooved sensor elementHITACHI LTD·Filed 2000·Granted Apr 29, 2003·25 cites·16 claims
- 1579US7409859B2Thermal type flow measuring apparatusHITACHI LTD·Filed 2006·Granted Aug 12, 2008·11 cites·16 claims
- 1679US7337661B2Thermal fluid flow meter having heat-generating resistor and temperature adjuster thereforHITACHI LTD·Filed 2006·Granted Mar 4, 2008·11 cites·9 claims
- 1778US7650784B2Thermal type flow rate measuring apparatusHITACHI LTD·Filed 2008·Granted Jan 26, 2010·7 cites·8 claims
- 1878US7104126B2Thermal type flow rate measuring apparatusHITACHI CAR ENG CO LTD·Filed 2005·Granted Sep 12, 2006·7 cites·19 claims
- 1978US6851311B2Thermal-type flow meter with bypass passageHITACHI LTD·Filed 2002·Granted Feb 8, 2005·22 cites·19 claims
- 2078US6666082B2Thermal airflow sensorHITACHI LTD·Filed 2002·Granted Dec 23, 2003·24 cites·19 claims
- 2177US7059183B2Air flow measuring deviceHITACHI CAR ENG CO LTD·Filed 2001·Granted Jun 13, 2006·15 cites·14 claims
- 2277US6988399B1Physical quantity detecting device having second lead conductors connected to the electrodes and extending to the circumference of the substrateHITACHI CAR ENG CO LTD·Filed 2000·Granted Jan 24, 2006·20 cites·6 claims
- 2377US6925866B2Thermal type flow rate measuring apparatusHITACHI CAR ENG CO LTD·Filed 2003·Granted Aug 9, 2005·15 cites·11 claims
- 2476US6973826B2Heating resistance flow rate measuring apparatusHITACHI CAR ENG CO LTD·Filed 2005·Granted Dec 13, 2005·7 cites·13 claims
- 2574US7555944B2Physical quantity sensorHITACHI LTD·Filed 2006·Granted Jul 7, 2009·8 cites·10 claims
- 2674US6490915B2Thermal type air flow sensor and control device for a vehicleHITACHI LTD·Filed 2001·Granted Dec 10, 2002·18 cites·13 claims
- 2773US6889545B2Flow rate sensorHITACHI CAR ENG CO LTD·Filed 2004·Granted May 10, 2005·17 cites·11 claims
- 2870US7377161B2Air flow measuring device provided with a vent in air passageHITACHI LTD·Filed 2007·Granted May 27, 2008·4 cites·10 claims
- 2969US6694810B2Air flow meterHITACHI LTD·Filed 2002·Granted Feb 24, 2004·14 cites·6 claims
- 3069US6357294B1Thermal air flow sensorHITACHI LTD·Filed 1999·Granted Mar 19, 2002·29 cites·9 claims
- 3166US7032446B2Flowrate measuring device with improved flow introduction into sub-passage outletHITACHI CAR ENG CO LTD·Filed 2002·Granted Apr 25, 2006·13 cites·11 claims
- 3265USRE42529EThermal flow rate measuring deviceHITACHI LTD·Filed 2005·Granted Jul 12, 2011·4 cites·28 claims
- 3362US7631555B2Thermal flowmeter for measuring a flow rate of fluidHITACHI LTD·Filed 2003·Granted Dec 15, 2009·10 cites·5 claims
- 3462US7137298B2Thermal air flowmeterHITACHI CAR ENG CO LTD·Filed 2004·Granted Nov 21, 2006·10 cites·9 claims
- 3561US6854326B2Measurement apparatus for measuring physical quantity such as fluid flowHITACHI LTD·Filed 2003·Granted Feb 15, 2005·8 cites·30 claims
- 3660US7559237B2Air flow measuring device provided with a vent in air passageHITACHI LTD·Filed 2008·Granted Jul 14, 2009·2 cites·9 claims
- 3758US7287424B2Thermal type flow measurement apparatus having asymmetrical passage for flow rate measurementHITACHI LTD·Filed 2005·Granted Oct 30, 2007·3 cites·12 claims
- 3857US9297677B2Gas flow rate measuring apparatus for minimizing temperature dependent errorsSUZUKI KAZUNORI·Filed 2012·Granted Mar 29, 2016·1 cites·7 claims
- 3957US6935172B2Thermal type flow measuring deviceHITACHI CAR ENG CO LTD·Filed 2001·Granted Aug 30, 2005·8 cites·18 claims
- 4055US6860149B2Mass airflow measuring apparatusHITACHI LTD·Filed 2003·Granted Mar 1, 2005·6 cites·6 claims
- 4154US7721599B2Reduced resistance thermal flow measurement deviceHITACHI LTD·Filed 2006·Granted May 25, 2010·2 cites·10 claims
- 4254US6672153B2Mass airflow measuring apparatusHITACHI LTD·Filed 2002·Granted Jan 6, 2004·6 cites·7 claims
- 4353US7181962B2Thermal flow sensorHITACHI LTD·Filed 2004·Granted Feb 27, 2007·6 cites·8 claims
- 4451US7624633B2Fluid flow sensor and fluid flow measurement deviceHITACHI LTD·Filed 2007·Granted Dec 1, 2009·1 cites·20 claims
- 4545US2007074859A1Heat exchanger and process for fabricating sameSHOWA DENKO KK·Filed 2004·Application pending·0 cites
- 4644US7225669B2Heating resistance flow rate measuring apparatusHITACHI CAR ENG CO LTD·Filed 2005·Granted Jun 5, 2007·0 cites·10 claims
- 4739US2003183000A1Gas flowmeter and manufacturing method thereofHITACHI LTD AND HITACHI CAR EN·Filed 2002·Application pending·0 cites
- 4838US10260921B2Thermal flow meterHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted Apr 16, 2019·0 cites·6 claims
- 4935US2007089504A1Gas flow measuring apparatusHANZAWA KEIJI·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →