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Class Information
Number: 73/202.5
Name: Measuring and testing > Volume or rate of flow > Proportional > Thermal sensing of flow
Description: Subject matter in which the rate of flow of a fluid is determined in a separated flow path by a sensed thermal effect caused by such flow.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
6779393 Device for measuring the mass of a flowing medium in an intake tube Aug. 24, 2004
6779394 Apparatus and method for thermal management of a mass flow controller Aug. 24, 2004
6776036 Fluid flow meter Aug. 17, 2004
6729182 Flow rate sensor, having a protective member and standard member May. 4, 2004
6725166 Flow pickup circuit Apr. 20, 2004
6708560 Measurement apparatus for measuring physical quantity such as fluid flow Mar. 23, 2004
6708561 Fluid flow meter having an improved sampling channel Mar. 23, 2004
6705159 Protective device for a mass flow sensor disposed in an air intake channel Mar. 16, 2004
6689179 Device for determining at least one parameter of a flowing medium Feb. 10, 2004
6684692 Device for measuring at least one parameter of a medium flowing in a line Feb. 3, 2004
6682381 Analysis of mercury in fluorescent lamps by cold spotting Jan. 27, 2004
6668641 Apparatus and method for thermal dissipation in a thermal mass flow sensor Dec. 30, 2003
6668642 Apparatus and method for thermal isolation of thermal mass flow sensor Dec. 30, 2003
6655207 Flow rate module and integrated flow restrictor Dec. 2, 2003
6647775 Device for measuring at least one parameter of a flowing medium Nov. 18, 2003
6647776 Split-flow flowmeter with a profusion facing the detection element Nov. 18, 2003
6645274 Device for determining at least one parameter of a flowing gas-liquid mixture or using a flow rectifier as a condensation trap or method for condensing a liquid Nov. 11, 2003
6628202 Thermal dispersion mass flow rate and liquid level switch/transmitter Sep. 30, 2003
6622556 Total temperature probe with complimentary sensor cavity Sep. 23, 2003
6622555 Fluid flow meter Sep. 23, 2003
6619140 Fluid flow meter having thermal flow sensor disposed in one of a plurality of fluid passages Sep. 16, 2003
6619114 Device for measuring at least one parameter of a medium flowing in a line Sep. 16, 2003
6619142 Integrated fluid sensing device Sep. 16, 2003
6595049 Thermal mass flow sensor with improved sensitivity and response time Jul. 22, 2003
6571621 Thermal flow rate measuring device Jun. 3, 2003
6561021 Flow rate-measuring device May. 13, 2003
6557408 Device for measuring the mass of a flowing medium May. 6, 2003
6557410 Flow rate sensor with a temperature sensing structure spaced from the support member May. 6, 2003
6513375 Flow rate sensor Feb. 4, 2003
6446504 Constant temperature gradient differential thermal mass flow sensor Sep. 10, 2002
6422070 Device for measuring the mass of a flowing medium Jul. 23, 2002
6401531 Air flow meter having flow rectifier with lattice in fixed configuration Jun. 11, 2002
6354150 Sensor for a capillary tube of a mass flow meter Mar. 12, 2002
6345531 Measuring device for measuring the mass of a flowing medium Feb. 12, 2002
6336361 Flow rate sensor with symmetrical support protective member and structural member Jan. 8, 2002
6332356 Measuring device for measuring the mass of a medium flowing in a line Dec. 25, 2001
6308553 Self-normalizing flow sensor and method for the same Oct. 30, 2001
6298720 Measurement device for measuring the mass of a medium flowing in a line Oct. 9, 2001
6272920 Device for measuring the mass of a flowing medium Aug. 14, 2001
6253606 Thermosensitive flow rate sensor Jul. 3, 2001
6240371 Pedestal-mounted sensor May. 29, 2001
6234015 Flow rate measuring device May. 22, 2001
6208254 Thermal dispersion mass flow rate and liquid level switch/transmitter Mar. 27, 2001
6148663 Device for measuring the amount of a flowing medium Nov. 21, 2000
6044701 Thermal mass flow controller having orthogonal thermal mass flow sensor Apr. 4, 2000
6035711 Device for determining the direction and speed of an air flow Mar. 14, 2000
6023969 Flow modulated mass flow sensor Feb. 15, 2000
6018994 Temperature sensitive flow sensor having plate-like straightening members on the metering pipe Feb. 1, 2000
5987981 Method for momentarily identifying a gas or liquid flow, and device for carry out the method Nov. 23, 1999
5948975 Device for measuring the mass of a flowing medium Sep. 7, 1999

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