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Class Information
Number: 73/24.05
Name: Measuring and testing > Gas analysis > By vibration > Density or specific gravity of gas
Description: Subject matter for determining the mass per unit volume of the gas or the ratio of the density of the gas to the density of some substance taken as a standard when both densities are obtained by weighing in air.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7476851 |
Aerodynamic focusing of nanoparticle or cluster beams |
Jan. 13, 2009 |
| 7395711 |
System and technique for characterizing fluids using ultrasonic diffraction grating spectroscopy |
Jul. 8, 2008 |
| 7316151 |
Apparatus and method for accurate, real-time measurement of pipeline gas |
Jan. 8, 2008 |
| 7191638 |
Device for determining and/or monitoring at least one physical parameter and having a piezo-drive for oscillation-excitation and -detection |
Mar. 20, 2007 |
| 7082810 |
Gas sensor |
Aug. 1, 2006 |
| 7081745 |
Paramagnetic oxygen sensing apparatus and method |
Jul. 25, 2006 |
| 7059171 |
Fluid density measurement using acoustic pressures for industrial sensing applications |
Jun. 13, 2006 |
| 6971259 |
Fluid density measurement in pipes using acoustic pressures |
Dec. 6, 2005 |
| 6877375 |
System and technique for characterizing fluids using ultrasonic diffraction grating spectroscopy |
Apr. 12, 2005 |
| 6715339 |
Self-normalizing flow sensor and method for the same |
Apr. 6, 2004 |
| 6704660 |
System and method to determine thermophysical properties of a multi-component gas at arbitrary temperature and pressure |
Mar. 9, 2004 |
| 6543274 |
Sensor array and method for determining the density and viscosity of a liquid |
Apr. 8, 2003 |
| 6494079 |
Method and apparatus for characterizing materials by using a mechanical resonator |
Dec. 17, 2002 |
| 6474137 |
Measuring relative density of a gas |
Nov. 5, 2002 |
| 6321588 |
Chemical sensor array |
Nov. 27, 2001 |
| 6311549 |
Micromechanical transient sensor for measuring viscosity and density of a fluid |
Nov. 6, 2001 |
| 6286361 |
Method and apparatus for remotely detecting pressure, force, temperature, density, vibration, viscosity and speed of sound in a fluid |
Sep. 11, 2001 |
| 6279378 |
Ultrasonic gas analyzer and method to analyze trace gases |
Aug. 28, 2001 |
| 6269686 |
Sensor, in particular for measuring the viscosity and density of a medium |
Aug. 7, 2001 |
| 6250132 |
Method and apparatus for real time gas analysis |
Jun. 26, 2001 |
| 6209387 |
System and method for determining thermodynamic properties |
Apr. 3, 2001 |
| 6116080 |
Apparatus and methods for performing acoustical measurements |
Sep. 12, 2000 |
| 6068030 |
Fueling system |
May. 30, 2000 |
| 6055846 |
Method and apparatus for in situ calibration of gas flowmeters |
May. 2, 2000 |
| 5932793 |
Apparatus and method for determining thermophysical properties using an isochoric approach |
Aug. 3, 1999 |
| 5900534 |
Densitometer |
May. 4, 1999 |
| 5524477 |
Quantitative determination of air present in refrigerant sample by measurement of pressure coefficient of resonance frequency |
Jun. 11, 1996 |
| 5478395 |
Process for supplying a gas, especially of diborane and silane |
Dec. 26, 1995 |
| 5447744 |
Process for supplying a gas, especially of diborane and silane |
Sep. 5, 1995 |
| 5421190 |
Device for measuring gas density |
Jun. 6, 1995 |
| 5386714 |
Resonant cavity gas density sensor |
Feb. 7, 1995 |
| 5309957 |
Fuel dispensing apparatus capable of automatically discriminating fuel sort |
May. 10, 1994 |
| 5285675 |
Acoustic fluid flow monitoring |
Feb. 15, 1994 |
| 5214955 |
Constant frequency pulsed phase-locked loop measuring device |
Jun. 1, 1993 |
| 5159843 |
Acoustic device and method for measuring gas densities |
Nov. 3, 1992 |
| 4872335 |
Vibrating type transducer |
Oct. 10, 1989 |
| 4734609 |
Gas density transducer |
Mar. 29, 1988 |
| 4679947 |
Method and apparatus for measuring steam quality |
Jul. 14, 1987 |
| 4574639 |
Pressure force measurement apparatus and method |
Mar. 11, 1986 |
| 4489592 |
Density monitor and method |
Dec. 25, 1984 |
| 4262523 |
Measurement of fluid density |
Apr. 21, 1981 |
| 4246773 |
Combustion property of gas measuring apparatus |
Jan. 27, 1981 |
| 4194385 |
Densitometer calibration method |
Mar. 25, 1980 |
| 4170894 |
Means, employing a fluidic oscillator, for determining the density of gas |
Oct. 16, 1979 |
| 4170128 |
Apparatus for density determination |
Oct. 9, 1979 |
| 4158959 |
Apparatus for measuring the physical properties of material |
Jun. 26, 1979 |
| 4114423 |
Device for measuring the density of liquid and gaseous substances and method for operating the device |
Sep. 19, 1978 |
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