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Class Information
Number: 702/50
Name: Data processing: measuring, calibrating, or testing > Measurement system in a specific environment > Mechanical measurement system > Fluid measurement (e.g., mass, pressure, viscosity)
Description: Subject matter wherein the measurement system or process is designed for or utilized to determine a physical property or characteristic of a fluid.


Sub-classes under this class:

Class Number Class Name Patents
702/54 Acoustic or vibration sensor 114
702/52 Capacitive sensor 51
702/51 Leak detecting 191
702/55 Liquid level or volume determination 212
702/53 Resistive sensor 27


Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
6644119 Noninvasive characterization of a flowing multiphase fluid using ultrasonic interferometry Nov. 11, 2003
6631334 Pressure-based mass flow controller system Oct. 7, 2003
6625566 Pressure drop calculation method and system taking account of thermal effects Sep. 23, 2003
6622574 Oil field management system Sep. 23, 2003
6625549 Equipment specifying system Sep. 23, 2003
6615145 Determination of particle character in a vertically flowing fluid Sep. 2, 2003
6611778 Apparatus for monitoring a system in which a fluid flows Aug. 26, 2003
6609070 Fluid treatment apparatus Aug. 19, 2003
6609071 System for monitoring and controlling pressure and concentration values in a fluid conduit Aug. 19, 2003
6604053 Method for measuring flow rate of a continuous fluid flow Aug. 5, 2003
6601013 Method and apparatus configured to determine the weight of a machine payload Jul. 29, 2003
6591201 Fluid energy pulse test system Jul. 8, 2003
6587798 Method and system for determining the speed of sound in a fluid within a conduit Jul. 1, 2003
6587797 Fluid consumption amount-measuring method and apparatus for the same Jul. 1, 2003
6577959 Fluid level measuring system for machines Jun. 10, 2003
6567756 Portable pressure measuring apparatus May. 20, 2003
6564154 Monitoring system May. 13, 2003
6564157 On-line device for predicting at least one fluid flow parameter in a process May. 13, 2003
6564167 Method of determining a position in dependence on a measurement signal of a position sensor May. 13, 2003
6560550 Device and method for indirect measurement of physical property of rock and soil May. 6, 2003
6556930 Fluid treatment apparatus Apr. 29, 2003
6553327 Apparatus for monitoring a system with time in space and method therefor Apr. 22, 2003
6549873 Position detecting device for hydraulic cylinder, and detecting method thereof Apr. 15, 2003
6549856 Fluid contaminant sensor Apr. 15, 2003
6542827 Well tending method and apparatus Apr. 1, 2003
6542832 Error detection and correction system for use with dual-pulse output metering devices Apr. 1, 2003
6539312 Sampling system for obtaining pipeline gas samples Mar. 25, 2003
6535836 Method for the analysis of abnormal particle populations Mar. 18, 2003
6535830 Scaled quadrature pulse signal generator Mar. 18, 2003
6535827 Method and apparatus for detecting and isolating a rupture in fluid distribution system Mar. 18, 2003
6532423 Method for determining fluid flow characteristic curves of heat-dissipating system Mar. 11, 2003
6526358 Model-based detection of leaks and blockages in fluid handling systems Feb. 25, 2003
6519536 Method for determining the behaviour of a viscoelastic material Feb. 11, 2003
6507793 Method for measuring vorticity Jan. 14, 2003
6507792 Method of selecting devices for use in fluid pipeline network Jan. 14, 2003
6502042 Fault tolerant liquid measurement system using multiple-model state estimators Dec. 31, 2002
6484108 Method for predicting recovery boiler leak detection system performance Nov. 19, 2002
6484107 Selectable on-off logic modes for a sensor module Nov. 19, 2002
6480793 Flow condition monitor Nov. 12, 2002
6470281 Method and apparatus for measuring a throttle point Oct. 22, 2002
6466880 Mass flow measurement methods, apparatus, and computer program products using mode selective filtering Oct. 15, 2002
6466879 Systems and methods for monitoring introduction of a processing fluid during a fluid processing procedure Oct. 15, 2002
6462655 Zone check test system Oct. 8, 2002
6456943 Carbon dioxide concentration sensor Sep. 24, 2002
6449566 Acoustic scattering measurement and processing for determining variances in multiple features Sep. 10, 2002
6438501 Flow through electrode with automated calibration Aug. 20, 2002
6438500 Method and device for detecting the absence of a product in a reservoir Aug. 20, 2002
6434494 Pressure based fluid gauging system Aug. 13, 2002
6434495 Two-phase heat-flow analyzing method and the apparatus thereof Aug. 13, 2002
6430515 Method of determining barometric pressure for use in an internal combustion engine Aug. 6, 2002

1 2 3 4 5 6 7 8


 
 
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