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Class Information
Number: 250/356.1
Name: Radiant energy > Invisible radiant energy responsive electric signalling > Flow metering
Description: Subject matter which includes a passageway containing moving material or a substance controlled by the moving material, a radiation source which may be the material itself, a detector responsive to the radiation from the source after passage of the radiation through the material or substance or the radiation from the material, wherein the detection forms the basis for a rate of flow determination and methods corresponding to the apparatus.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7372039 |
Near UV absorption spectrometer and method for using the same |
May. 13, 2008 |
| 7102133 |
Method and device for measuring a mass flow |
Sep. 5, 2006 |
| 6433861 |
Method and apparatus for a non-invasive measurement of the velocity of a gas or a fluid medium |
Aug. 13, 2002 |
| 6335959 |
Apparatus and method for determining oil well effluent characteristics for inhomogeneous flow conditions |
Jan. 1, 2002 |
| 6013921 |
Method of measuring a mass flow distribution of a flow |
Jan. 11, 2000 |
| 6011263 |
Method and apparatus for measuring multi-phase flow |
Jan. 4, 2000 |
| 5949069 |
Method and apparatus for measuring volumetric water flow rates in highly inclined wellbores |
Sep. 7, 1999 |
| 5708495 |
Method and apparatus for determining the velocity of a gas flow |
Jan. 13, 1998 |
| 5701009 |
Gas detection devices |
Dec. 23, 1997 |
| 5654551 |
Method and apparatus for the measurement of the mass flow rates of fluid components in a multiphase slug flow |
Aug. 5, 1997 |
| 5543617 |
Method of measuring flow velocities using tracer techniques |
Aug. 6, 1996 |
| 5526122 |
Method for determining the mass flow of gases on the basis of optical absorption and employment of said method |
Jun. 11, 1996 |
| 5479020 |
Metering device for a fluid |
Dec. 26, 1995 |
| 5461909 |
Oxygen activation method for quantitative water flow measurements within and behind well bore casing |
Oct. 31, 1995 |
| 5404752 |
Method for measuring the velocity of water flow through nested conduits |
Apr. 11, 1995 |
| 5396075 |
Method for in situ characterization of a medium of dispersed matter in a continuous phase |
Mar. 7, 1995 |
| 5354990 |
In-situ localized tracer injection/fiber optic detection for measurement of flow distributions in fixed bed reactors |
Oct. 11, 1994 |
| 5344044 |
Additive injection system and method |
Sep. 6, 1994 |
| 5343041 |
Method and apparatus for determining the physical characteristics of a water flow |
Aug. 30, 1994 |
| 5333044 |
Fluorescent image tracking velocimeter |
Jul. 26, 1994 |
| 5315117 |
Volume meter system |
May. 24, 1994 |
| 5306911 |
Method for determining the flow rate of aqueous phases in a multiphase flow |
Apr. 26, 1994 |
| 5304800 |
Leak detection and responsive treatment in industrial water processes |
Apr. 19, 1994 |
| 5271900 |
Carbon analyzer for both aqueous solutions and solid samples |
Dec. 21, 1993 |
| 5253535 |
Apparatus and method for monitoring mass flow of solids |
Oct. 19, 1993 |
| 5251785 |
Additive injection system and method |
Oct. 12, 1993 |
| 5243190 |
Radioactive tracing with particles |
Sep. 7, 1993 |
| 5048973 |
Plug-type heat flux gauge |
Sep. 17, 1991 |
| 5025160 |
Measurement of flow velocity and mass flowrate |
Jun. 18, 1991 |
| 4974245 |
System for the assembly of a metal joining piece and a high pressure composite material tube notably applications for equipment used in the oil industry |
Nov. 27, 1990 |
| 4971077 |
On-line tobacco evaluation system and method |
Nov. 20, 1990 |
| 4941778 |
Method and apparatus for measuring and regulating the flow rate of powder in a powder spraying device |
Jul. 17, 1990 |
| 4912332 |
Non-destructive methods for detecting organic deposits and removing them |
Mar. 27, 1990 |
| 4896532 |
Method of detecting turbulence in laminar air flow |
Jan. 30, 1990 |
| 4850001 |
Orifice blockage detection system |
Jul. 18, 1989 |
| 4835390 |
Apparatus and method for measuring bulk density using positron scattering and annihilation |
May. 30, 1989 |
| 4825072 |
Method and apparatus for determining well fluid flow velocity using a nonradioactive tracer |
Apr. 25, 1989 |
| 4807990 |
Laser fluorescence velocimeter |
Feb. 28, 1989 |
| 4752690 |
Method and apparatus for detecting incongruities, such as air bubbles, in fluid material |
Jun. 21, 1988 |
| 4618939 |
Nuclear densometer |
Oct. 21, 1986 |
| 4520677 |
Solids mass flow indication with radiation |
Jun. 4, 1985 |
| 4515896 |
Fluorescent additives for the determination of condensed and vapor phases in multiphase systems |
May. 7, 1985 |
| 4449400 |
Radionuculide counting technique for measuring wind velocity and direction |
May. 22, 1984 |
| 4314241 |
Coal pipe monitor |
Feb. 2, 1982 |
| 4288230 |
Method and a device for the production of a solid-forming or foam-forming flowable reaction mixture |
Sep. 8, 1981 |
| 4282433 |
Apparatus for measuring the density of a multiphase stream |
Aug. 4, 1981 |
| 4270558 |
Process for monitoring the flow of fine grained solid fuel for use in gasifiers |
Jun. 2, 1981 |
| 4228353 |
Multiple-phase flowmeter and materials analysis apparatus and method |
Oct. 14, 1980 |
| 4210809 |
Method and apparatus for the non-invasive determination of the characteristics of a segmented fluid stream |
Jul. 1, 1980 |
| 4205230 |
Solid materials flow rate measurement |
May. 27, 1980 |
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