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Class Information
Number: 73/861.05
Name: Measuring and testing > Volume or rate of flow > By measuring transit time of tracer or tag
Description: Subject matter responsive to the time elapsed for a detectable property of the fluid or a detectable body or substance introduced into the fluid to travel a fixed distance.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7318336 |
Methods for controlling one or more parameters of a flow cytometer type measurement system |
Jan. 15, 2008 |
| 7297280 |
Method and apparatus to measure blood flow in hemodialysis shunts |
Nov. 20, 2007 |
| 7265832 |
Optical flow meter for measuring gases and liquids in pipelines |
Sep. 4, 2007 |
| 7210359 |
Method and apparatus to determine an initial flow rate in a conduit |
May. 1, 2007 |
| 7040144 |
Microfluidic viscometer |
May. 9, 2006 |
| 7013739 |
System and method for confining an object to a region of fluid flow having a stagnation point |
Mar. 21, 2006 |
| 6943690 |
Flow verification mechanism |
Sep. 13, 2005 |
| 6938495 |
Method of measuring fluid flow |
Sep. 6, 2005 |
| 6926838 |
Method to measure blood flow and recirculation in hemodialysis shunts |
Aug. 9, 2005 |
| 6868739 |
Method and apparatus to measure blood flow by an introduced volume change |
Mar. 22, 2005 |
| 6869425 |
Temperature compensation system for regulating flow through tubing in a pump |
Mar. 22, 2005 |
| 6766699 |
System for measuring residence time for a particulate containing food product |
Jul. 27, 2004 |
| 6672172 |
Triggered flow measurement |
Jan. 6, 2004 |
| 6668663 |
Method and apparatus to determine flow rate with the introduction of ambient air |
Dec. 30, 2003 |
| 6550344 |
Semi-flush air data sensor |
Apr. 22, 2003 |
| 6514419 |
Method to measure blood flow and recirculation in hemodialysis shunts |
Feb. 4, 2003 |
| 6503221 |
Temperature compensation system for regulating flow through tubing in a pump |
Jan. 7, 2003 |
| 6414748 |
Method for measuring the flow of fluids |
Jul. 2, 2002 |
| 6393925 |
Groundwater velocity probe |
May. 28, 2002 |
| 6276217 |
Method of measuring fluid flow by analyzing the fluorescent emissions of tracer particles in the fluid |
Aug. 21, 2001 |
| 6216543 |
Method and device for controlling liquid fluxes in pipes lines |
Apr. 17, 2001 |
| 6210591 |
Method to measure blood flow rate in hemodialysis shunts |
Apr. 3, 2001 |
| 6153109 |
Method and apparatus to measure blood flow rate in hemodialysis shunts |
Nov. 28, 2000 |
| 6118519 |
Method for measuring the flow of fluids |
Sep. 12, 2000 |
| 6089103 |
Method of flow measurements |
Jul. 18, 2000 |
| 6009760 |
Method of measuring flow, and flow meter |
Jan. 4, 2000 |
| 5979245 |
Method of measuring fluid flow by analyzing the fluorescent emissions from tracer particles in the fluid |
Nov. 9, 1999 |
| 5932813 |
Method and system for residence time measurement of simulated food particles in continuous thermal food processing and simulated food particles for use in same |
Aug. 3, 1999 |
| 5880375 |
Apparatus and method for measuring multi-phase flow |
Mar. 9, 1999 |
| 5864392 |
Method for optically detecting gas bubbles moving in a coolant |
Jan. 26, 1999 |
| 5828712 |
Coolant water flow rate test with rubidium nuclear tracer for reactors |
Oct. 27, 1998 |
| 5792963 |
Method for determining gas mass flows by use of a tracer gas |
Aug. 11, 1998 |
| 5741979 |
Particle velocity measuring system |
Apr. 21, 1998 |
| 5739437 |
Process and article for determining the residence time of a food particle TRX-371 |
Apr. 14, 1998 |
| 5708495 |
Method and apparatus for determining the velocity of a gas flow |
Jan. 13, 1998 |
| 5691483 |
Method and apparatus for determining a real velocity distribution of solid particles travelling in a gas carrier flow for shot peening |
Nov. 25, 1997 |
| 5685989 |
Method and apparatus to measure blood flow and recirculation in hemodialysis shunts |
Nov. 11, 1997 |
| 5646354 |
Microwave thermal trace flowmeter |
Jul. 8, 1997 |
| 5594179 |
Tracer type flowmeter and method using two or more injected trace materials |
Jan. 14, 1997 |
| 5447692 |
On-line process flow and reaction monitor |
Sep. 5, 1995 |
| 5355735 |
Apparatus for metering liquid flow |
Oct. 18, 1994 |
| 5265477 |
Detection device for detecting the flow and direction of ground water |
Nov. 30, 1993 |
| 5261282 |
Method and apparatus for monitoring a continuous cooking process based on particulate residence time |
Nov. 16, 1993 |
| RE34265 |
Groundwater azimuth detection |
May. 25, 1993 |
| 5209114 |
Reciprocating piston flow meter |
May. 11, 1993 |
| 5182939 |
Method for determination of average downhole steam quality by measuring the slip ratio between the vapor and liquid phases of steam |
Feb. 2, 1993 |
| 5170438 |
Method and apparatus for determining the flow rate of a viscous fluid stream |
Dec. 8, 1992 |
| 5153665 |
Vaporizing particle velocimeter |
Oct. 6, 1992 |
| 5141324 |
Visual monitoring device for sludge conditioning system |
Aug. 25, 1992 |
| 5131277 |
Reverse osmosis system |
Jul. 21, 1992 |
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