Inventor · disambiguated record
Izumi Watanabe
Also filed as: WATANABE IZUMI
77 granted patents·6 pending applications·1,858 citations·filing 1986–2024
99Inventor score
Top patents by PatentIndex Score
83 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
- 0392US7437927B2Thermal type gas flow meterHITACHI LTD·Filed 2007·Granted Oct 21, 2008·23 cites·15 claims
- 0490US8203102B2Thermal type flow sensorNAKANO HIROSHI·Filed 2010·Granted Jun 19, 2012·8 cites·11 claims
- 0590US6923053B2Gas flowmeter and manufacturing method thereofHITACHI CAR ENG CO LTD·Filed 2004·Granted Aug 2, 2005·31 cites·7 claims
- 0688US8779337B2Thermal type flow sensor having bridge circuit and adjustment circuitNAKANO HIROSHI·Filed 2012·Granted Jul 15, 2014·6 cites·5 claims
- 0788US5482029AVariable flexibility endoscope systemTOSHIBA KK·Filed 1993·Granted Jan 9, 1996·461 cites·7 claims
- 0887US7228614B2Method of manufacturing a gas flow meterHITACHI CAR ENG CO LTD·Filed 2005·Granted Jun 12, 2007·14 cites·1 claims
- 0987US7216535B2Air 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
- 1087US6349596B1Thermal type air flow sensorHITACHI LTD·Filed 1999·Granted Feb 26, 2002·58 cites·6 claims
- 1187US4760428AImage data recording medium and apparatus for determining tape position of the sameFUJI PHOTO FILM CO LTD·Filed 1986·Granted Jul 26, 1988·34 cites·14 claims
- 1286US7269999B2Thermal airflow meterHITACHI CAR ENG CO LTD·Filed 2006·Granted Sep 18, 2007·15 cites·10 claims
- 1384US6708560B2Measurement apparatus for measuring physical quantity such as fluid flowHITACHI LTD·Filed 2001·Granted Mar 23, 2004·26 cites·10 claims
- 1484US6571621B2Thermal flow rate measuring deviceHITACHI LTD·Filed 2001·Granted Jun 3, 2003·26 cites·12 claims
- 1583US7395707B2Thermal type flow rate measuring apparatusHITACHI LTD·Filed 2006·Granted Jul 8, 2008·9 cites·8 claims
- 1683US7201047B2Air flow measuring deviceHITACHI CAR ENG CO LTD·Filed 2005·Granted Apr 10, 2007·9 cites·11 claims
- 1783US7010971B2Heating resistor type flow-measuring device having a heating resistor and a thermoresistance, whose resistance value varies in response to the ambient temperatureHITACHI CAR ENG CO LTD·Filed 2004·Granted Mar 14, 2006·31 cites·9 claims
- 1882US7360415B2Thermal type air flow meter having semiconductor sensor elements with similar diaphragm sizesHITACHI LTD·Filed 2005·Granted Apr 22, 2008·13 cites·11 claims
- 1982US7270000B2Fluid flow sensor and fluid flow measurement deviceHITACHI CAR ENG CO LTD·Filed 2005·Granted Sep 18, 2007·11 cites·20 claims
- 2082US6752014B1Hot-wire type air flow meter for internal combustion engineHITACHI LTD·Filed 2000·Granted Jun 22, 2004·28 cites·33 claims
- 2181US7685874B2Thermal type flow sensor with a constricted measuring passageHITACHI LTD·Filed 2007·Granted Mar 30, 2010·12 cites·9 claims
- 2280US6553829B1Air flow sensor having grooved sensor elementHITACHI LTD·Filed 2000·Granted Apr 29, 2003·25 cites·16 claims
- 2379US7409859B2Thermal type flow measuring apparatusHITACHI LTD·Filed 2006·Granted Aug 12, 2008·11 cites·16 claims
- 2479US7337661B2Thermal fluid flow meter having heat-generating resistor and temperature adjuster thereforHITACHI LTD·Filed 2006·Granted Mar 4, 2008·11 cites·9 claims
- 2579US4671648AImage data processing apparatusFUJI PHOTO FILM CO LTD·Filed 1986·Granted Jun 9, 1987·23 cites·22 claims
- 2678US7650784B2Thermal type flow rate measuring apparatusHITACHI LTD·Filed 2008·Granted Jan 26, 2010·7 cites·8 claims
- 2778US7104126B2Thermal type flow rate measuring apparatusHITACHI CAR ENG CO LTD·Filed 2005·Granted Sep 12, 2006·7 cites·19 claims
- 2878US6851311B2Thermal-type flow meter with bypass passageHITACHI LTD·Filed 2002·Granted Feb 8, 2005·22 cites·19 claims
- 2978US6666082B2Thermal airflow sensorHITACHI LTD·Filed 2002·Granted Dec 23, 2003·24 cites·19 claims
- 3077US7059183B2Air flow measuring deviceHITACHI CAR ENG CO LTD·Filed 2001·Granted Jun 13, 2006·15 cites·14 claims
- 3177US6988399B1Physical 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
- 3277US6925866B2Thermal type flow rate measuring apparatusHITACHI CAR ENG CO LTD·Filed 2003·Granted Aug 9, 2005·15 cites·11 claims
- 3376US7298824B2X-ray diagnostic apparatusTOSHIBA KK·Filed 2006·Granted Nov 20, 2007·14 cites·14 claims
- 3476US6973826B2Heating resistance flow rate measuring apparatusHITACHI CAR ENG CO LTD·Filed 2005·Granted Dec 13, 2005·7 cites·13 claims
- 3574US7555944B2Physical quantity sensorHITACHI LTD·Filed 2006·Granted Jul 7, 2009·8 cites·10 claims
- 3674US6490915B2Thermal type air flow sensor and control device for a vehicleHITACHI LTD·Filed 2001·Granted Dec 10, 2002·18 cites·13 claims
- 3773US6889545B2Flow rate sensorHITACHI CAR ENG CO LTD·Filed 2004·Granted May 10, 2005·17 cites·11 claims
- 3873US6187032B1Measurement of intracardiac electrophysiological phenomenaTOSHIBA KK·Filed 1998·Granted Feb 13, 2001·184 cites·72 claims
- 3973US5061955AMicrofilm reader/printerFUJI PHOTO FILM CO LTD·Filed 1990·Granted Oct 29, 1991·15 cites·7 claims
- 4072US6435023B1Heating resistor type air flow rate measuring apparatusHITACHI LTD·Filed 1997·Granted Aug 20, 2002·27 cites·16 claims
- 4170US7377161B2Air flow measuring device provided with a vent in air passageHITACHI LTD·Filed 2007·Granted May 27, 2008·4 cites·10 claims
- 4270US4736224AMethod of and apparatus for determining frame positionFUJI PHOTO FILM CO LTD·Filed 1986·Granted Apr 5, 1988·31 cites·10 claims
- 4369US6694810B2Air flow meterHITACHI LTD·Filed 2002·Granted Feb 24, 2004·14 cites·6 claims
- 4466US7032446B2Flowrate measuring device with improved flow introduction into sub-passage outletHITACHI CAR ENG CO LTD·Filed 2002·Granted Apr 25, 2006·13 cites·11 claims
- 4566US5817932AIntake air flow measuring apparatus for internal combustion engineHITACHI LTD·Filed 1995·Granted Oct 6, 1998·30 cites·11 claims
- 4666US5708205AMeasuring element for a mass air flow sensor and mass air flow sensor using the measuring elementHITACHI LTD·Filed 1996·Granted Jan 13, 1998·32 cites·9 claims
- 4765USRE42529EThermal flow rate measuring deviceHITACHI LTD·Filed 2005·Granted Jul 12, 2011·4 cites·28 claims
- 4865US7565255B2Thermal flow meter and control systemHITACHI LTD·Filed 2004·Granted Jul 21, 2009·12 cites·5 claims
- 4962US7631555B2Thermal flowmeter for measuring a flow rate of fluidHITACHI LTD·Filed 2003·Granted Dec 15, 2009·10 cites·5 claims
- 5062US7137298B2Thermal air flowmeterHITACHI CAR ENG CO LTD·Filed 2004·Granted Nov 21, 2006·10 cites·9 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →