P

Inventor

WATANABE IZUMI

JP77 patents
⚠️ This page may combine multiple inventors who share the name “WATANABE IZUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

26 patents
US6516785B1Feb 11, 2003

Air flow sensor

HITACHI LTD87 citations98
US6557411B1May 6, 2003

Heating element type mass air flow sensor, and internal combustion engine-control apparatus using the sensor

HITACHI LTD70 citations96
US6349596B1Feb 26, 2002

Thermal type air flow sensor

HITACHI LTD58 citations96
US7437927B2Oct 21, 2008

Thermal type gas flow meter

HITACHI LTD23 citations93
US6666082B2Dec 23, 2003

Thermal airflow sensor

HITACHI LTD24 citations93
US6553829B1Apr 29, 2003

Air flow sensor having grooved sensor element

HITACHI LTD25 citations93
US5817932AOct 6, 1998

Intake air flow measuring apparatus for internal combustion engine

HITACHI LTD30 citations93
US6752014B1Jun 22, 2004

Hot-wire type air flow meter for internal combustion engine

HITACHI LTD28 citations92
US6708560B2Mar 23, 2004

Measurement apparatus for measuring physical quantity such as fluid flow

HITACHI LTD26 citations92
US6571621B2Jun 3, 2003

Thermal flow rate measuring device

HITACHI LTD26 citations92
US6435023B1Aug 20, 2002

Heating resistor type air flow rate measuring apparatus

HITACHI LTD27 citations92
US6851311B2Feb 8, 2005

Thermal-type flow meter with bypass passage

HITACHI LTD22 citations91
US5708205AJan 13, 1998

Measuring element for a mass air flow sensor and mass air flow sensor using the measuring element

HITACHI LTD32 citations90
US7685874B2Mar 30, 2010

Thermal type flow sensor with a constricted measuring passage

HITACHI LTD12 citations84
US7631555B2Dec 15, 2009

Thermal flowmeter for measuring a flow rate of fluid

HITACHI LTD10 citations84
US7565255B2Jul 21, 2009

Thermal flow meter and control system

HITACHI LTD12 citations84
US7555944B2Jul 7, 2009

Physical quantity sensor

HITACHI LTD8 citations84
US7409859B2Aug 12, 2008

Thermal type flow measuring apparatus

HITACHI LTD11 citations84
US7395707B2Jul 8, 2008

Thermal type flow rate measuring apparatus

HITACHI LTD9 citations84
US7360415B2Apr 22, 2008

Thermal type air flow meter having semiconductor sensor elements with similar diaphragm sizes

HITACHI LTD13 citations84
US7337661B2Mar 4, 2008

Thermal fluid flow meter having heat-generating resistor and temperature adjuster therefor

HITACHI LTD11 citations84
US6694810B2Feb 24, 2004

Air flow meter

HITACHI LTD14 citations84
US6490915B2Dec 10, 2002

Thermal type air flow sensor and control device for a vehicle

HITACHI LTD18 citations84
US5952571ASep 14, 1999

Thermal type flow meter

HITACHI LTD17 citations84
US7650784B2Jan 26, 2010

Thermal type flow rate measuring apparatus

HITACHI LTD7 citations74
US7377161B2May 27, 2008

Air flow measuring device provided with a vent in air passage

HITACHI LTD4 citations74

HITACHI CAR ENG CO LTD

15 patents
US7010971B2Mar 14, 2006

Heating resistor type flow-measuring device having a heating resistor and a thermoresistance, whose resistance value varies in response to the ambient temperature

HITACHI CAR ENG CO LTD31 citations93
US6988399B1Jan 24, 2006

Physical quantity detecting device having second lead conductors connected to the electrodes and extending to the circumference of the substrate

HITACHI CAR ENG CO LTD20 citations93
US6923053B2Aug 2, 2005

Gas flowmeter and manufacturing method thereof

HITACHI CAR ENG CO LTD31 citations93
US7216535B2May 15, 2007

Air flow measuring device and engine having the air flow measuring device

HITACHI CAR ENG CO LTD11 citations92
US7059183B2Jun 13, 2006

Air flow measuring device

HITACHI CAR ENG CO LTD15 citations92
US6925866B2Aug 9, 2005

Thermal type flow rate measuring apparatus

HITACHI CAR ENG CO LTD15 citations92
US7269999B2Sep 18, 2007

Thermal airflow meter

HITACHI CAR ENG CO LTD15 citations84
US7270000B2Sep 18, 2007

Fluid flow sensor and fluid flow measurement device

HITACHI CAR ENG CO LTD11 citations84
US7228614B2Jun 12, 2007

Method of manufacturing a gas flow meter

HITACHI CAR ENG CO LTD14 citations84
US7032446B2Apr 25, 2006

Flowrate measuring device with improved flow introduction into sub-passage outlet

HITACHI CAR ENG CO LTD13 citations84
US6889545B2May 10, 2005

Flow rate sensor

HITACHI CAR ENG CO LTD17 citations84
US7201047B2Apr 10, 2007

Air flow measuring device

HITACHI CAR ENG CO LTD9 citations74
US7137298B2Nov 21, 2006

Thermal air flowmeter

HITACHI CAR ENG CO LTD10 citations74
US7104126B2Sep 12, 2006

Thermal type flow rate measuring apparatus

HITACHI CAR ENG CO LTD7 citations74
US6973826B2Dec 13, 2005

Heating resistance flow rate measuring apparatus

HITACHI CAR ENG CO LTD7 citations74

TOSHIBA KK

4 patents

FUJI PHOTO FILM CO LTD

3 patents

NAKANO HIROSHI

2 patents

Showing the top 50 of 77 patents by PatentIndex Score.