Inventor

HANZAWA KEIJI

JP116 patents

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

HANZAWA KEIJI

HITACHI LTD

Sensor adjusting circuit

Capacitance type sensor device

Capacitive type pressure sensor

Semiconductor pressure sensor including reference capacitor on the same substrate

System and method for diagnosing characteristics of acceleration sensor

Capacitive pressure sensor

Circuit for protecting a load from an overvoltage

Flowmeter and flowmeter system

Gas flow rate measuring device having an integrated chip temperature sensor and adjustment processing circuit on common chip

Electrostatic capacitance type dynamical quantity sensor

Semiconductor pressure sensor utilizing capacitance change

Air flow measuring instrument having dust particle diverting structure

Thermal flowmeter for measuring a flow rate of fluid

Thermal flow meter and control system

Gas flow meter

Semiconductor memory devices and sensors using the same

Heating resistor-type gas flowmeter

HITACHI AUTOMOTIVE SYSTEMS LTD

Thermal flow meter

Thermal humidity sensor

Thermal flow meter with an asymmetrical inflow-side of circuit package

Thermal flow meter

Thermal airflow sensor

Thermal flow meter capable of measuring flow rates in forward flow and reverse flow directions

Thermal flow meter with drainage passage at inlet of bypass passage

Thermal airflow sensor

Thermal airflow measuring device

Thermal flow meter with an asymmetrical inflow-side of circuit package

Thermal flow meter including a protrusion protruding from a circuit package body and a temperature detection element buried in the protrusion

Thermal flow meter with lead having a bent portion

Thermal flow meter with a circuit package having an air flow measurement circuit for measuring an air flow

Flow sensor

HITACHI CAR ENG CO LTD

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

Thermal airflow meter

Serial data transferring apparatus

Thermal air flowmeter

Heating resistance flow rate measuring apparatus

Thermal air flowmeter

Gas flow meter

NAKANO HIROSHI

Thermal flowmeter

Thermal gas sensor

KONO TSUTOMU

Flow sensor and manufacturing method of the same and flow sensor module and manufacturing method of the same

Flow sensor, method for manufacturing flow sensor and flow sensor module

MATSUMOTO MASAHIRO

Intake temperature sensor

Intake air temperature sensor and thermal airflow meter including the same

ASANO SATOSHI

Fluid measurement device having a circuit for precise flow measurement

Flow rate measuring device with first temperature sensor in a main passage and second temperature sensor in a sub-passage

HITACHI LTD AND HITACHI CAR EN

Capacitance type pressure sensor with capacitive elements actuated by a diaphragm

ARAI SATOSHI

Flow sensor with a housing that accommodates an auxiliary channel having an opening into which a fluid to be measured is taken

SAITO TAKAYUKI

Sensor structure

DOI RYOSUKE

Thermal air flow sensor