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Class Information
Number: 324/717
Name: Electricity: measuring and testing > Impedance, admittance or other quantities representative of electrical stimulus/response relationships > Lumped type parameters > Using resistance or conductance measurement > With voltage or current signal evaluation > Including a particular probing technique (e.g., four point probe) > To determine material composition
Description: Subject matter wherein the voltage or current signal evaluation or processing is used to determine the quantity, quality or percentage of substances that make up the test object.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8564316 Gem tester Oct. 22, 2013
8461854 Systems and methods for characterizing a molecule Jun. 11, 2013
8358144 Method for manufacturing semiconductor device, semiconductor inspection device, and program including color imaging of metal silicide Jan. 22, 2013
8324914 Systems and methods for characterizing a molecule Dec. 4, 2012
8305096 Apparatus and method for measuring and monitoring layer properties in web-based processes Nov. 6, 2012
8278906 Apparatus for simulating thermal conductivity and electrical resistance of diamonds and their substitutes Oct. 2, 2012
8217670 Label-free sensor Jul. 10, 2012
7893698 Non-destructive method for detecting zones with non conductive materials in a composite part Feb. 22, 2011
7873481 System and method for analyzing a sample using chromatography coupled mass spectrometry Jan. 18, 2011
7857506 Disposable, pre-calibrated, pre-validated sensors for use in bio-processing applications Dec. 28, 2010
7663383 Method for detection and analysis of impurity content in refined metallurgical silicon Feb. 16, 2010
7606667 Mass spectrometry analysis method and system Oct. 20, 2009
7563530 Fuel amount control system for fuel cell Jul. 21, 2009
7483735 Apparatus and method for monitoring body composition by measuring body dielectric constant and body impedance based on the method of frequency digital sampling Jan. 27, 2009
7459920 Method of and apparatus for non-destructively measuring moisture content of dried objects Dec. 2, 2008
7362109 Gem tester using electrical photoconductivity Apr. 22, 2008
7185545 Instrumentation and method for monitoring change in electric potential to detect crack growth Mar. 6, 2007
7135872 Method of determining the composition of a multiphase fluid Nov. 14, 2006
7068054 Real-time carbon sensor for measuring concentration profiles in carburized steel Jun. 27, 2006
6952652 System and method for sample detection based on low-frequency spectral components Oct. 4, 2005
6819121 Method and apparatus for measurement of concrete cure status Nov. 16, 2004
6815974 Determining composition of mixed dielectrics Nov. 9, 2004
6791334 Oil condition sensor and method for making the same Sep. 14, 2004
6788076 Apparatus for determining doping concentration of a semiconductor wafer Sep. 7, 2004
6636055 Multifrequency equipment for sensing the state of electrodes in electric-arc furnaces Oct. 21, 2003
6580280 Multilayered gas sensor and a related gas concentration detecting system Jun. 17, 2003
6566853 Molten metal inclusion sensor probes May. 20, 2003
6525549 Method for determining the concentration of a substance in a liquid by measuring electrical current in a test strip Feb. 25, 2003
6468478 Oxygen concentration sensor element impedance detecting apparatus and method Oct. 22, 2002
6466038 Non-isothermal electromigration testing of microelectronic packaging interconnects Oct. 15, 2002
6439766 Diamond detecting apparatus and method Aug. 27, 2002
6380745 Electrical geophysical apparatus for determining the density of porous materials and establishing geo-electric constants of porous material Apr. 30, 2002
6300778 Solder paste and residue Oct. 9, 2001
6265884 Electrical conductivity gem tester Jul. 24, 2001
6167300 Electric mammograph Dec. 26, 2000
6084418 Method for accurately detecting sensor element resistance Jul. 4, 2000
6058934 Planar hematocrit sensor incorporating a seven-electrode conductivity measurement cell May. 9, 2000
6034520 Method of determination of active ions by electric conductivity and electric conductivity metering system therefor Mar. 7, 2000
6005399 Solder paste and residue measurement system Dec. 21, 1999
5999004 Method of detecting a change in the property of a rubber member Dec. 7, 1999
5889396 Method and device for measuring the quantity of an active principle contained in a reservoir Mar. 30, 1999
5861750 Geophysical methods and apparatus for determining the hydraulic conductivity of porous materials Jan. 19, 1999
5861751 Electrical geophysical methods and apparatus for determining the in-situ density of porous material Jan. 19, 1999
5789910 Molten metal inclusion sensor probes Aug. 4, 1998
5763879 Diamond probe tip Jun. 9, 1998
5749986 Control of batching and curing processes May. 12, 1998
5744972 Device and method to measure the complex permeability of thin films at ultra-high frequencies Apr. 28, 1998
5668479 Multipurpose sensor for belt conveyor Sep. 16, 1997
5656940 Apparatus for measuring the surface resistance and electrical resistivity of a homogeneous resistive material at high temperature Aug. 12, 1997
5635845 Detection of cross-linking in pre-cure stage polymeric materials by measuring their resistance Jun. 3, 1997

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