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Class Information
Number: 324/699
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 object or substance characteristic determination using conductivity effects > To determine dimension (e.g., distance or thickness)
Description: Subject matter including means to evaluate alterations in the physical shape of an object.


Sub-classes under this class:

Class Number Class Name Patents
324/700 Including corrosion or erosion 161


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
7164276 Method for determining the wall thickness of a metal tube Jan. 16, 2007
7018165 Method of minimizing the gap between a rotating turbine blade and a casing of a turbine, a turbine, and a method of determining the wear behavior of a wheel of a rotor Mar. 28, 2006
7019538 Electrostatic capacitance sensor type measurement apparatus Mar. 28, 2006
7002360 System and method for measuring the thickness or temperature of a circuit in a printed circuit board Feb. 21, 2006
6972576 Electrical critical dimension measurement and defect detection for reticle fabrication Dec. 6, 2005
6954062 Apparatus for determining gaps between a proximity probe and a conductive target material Oct. 11, 2005
6922070 Evaluating pattern for measuring an erosion of a semiconductor wafer polished by a chemical mechanical polishing Jul. 26, 2005
6919731 Method for measuring a position of a conductive target material Jul. 19, 2005
6861852 Method for measuring a gap between a proximity probe and a conductive target material Mar. 1, 2005
6850078 Method for measuring a gap between a proximity probe and a conductive target material Feb. 1, 2005
6825676 Apparatus for determining dynamic gaps between a proximity probe and a conductive target material Nov. 30, 2004
6822460 Method and apparatus for detecting a dry/wet state of a thermistor bead using temperature compensation Nov. 23, 2004
6819122 Method for measuring a gap between a proximity probe and a conductive target material Nov. 16, 2004
6798194 Method for measuring a gap between a proximity probe and a conductive target material Sep. 28, 2004
6768323 System and method for determining location of extrusion in interconnect Jul. 27, 2004
6768321 Component position indicating apparatus Jul. 27, 2004
6765395 Method for measuring a gap between a proximity probe and a conductive target material Jul. 20, 2004
6756794 Apparatus for determining a gap between a proximity probe component and a conductive target material Jun. 29, 2004
6731110 Magneto-resistive device with built-in test structure and method for determining resistance and track width May. 4, 2004
6724201 Resistance type liquid level measuring apparatus Apr. 20, 2004
6714026 System and method for measuring the thickness or temperature of a circuit in a printed circuit board Mar. 30, 2004
6677766 Shallow trench isolation step height detection method Jan. 13, 2004
6608491 Container level monitoring system Aug. 19, 2003
6597186 Through tank level gauging Jul. 22, 2003
6593729 Position measuring device for detecting displacements with at least three degrees of freedom Jul. 15, 2003
6529014 Coating thickness gauge with automated zero adjustment and/or calibration Mar. 4, 2003
6525548 Check pattern for a semiconductor device Feb. 25, 2003
6504386 Liquid dielectric capacitor for film thickness mapping, measurement methods using same Jan. 7, 2003
6498500 Conductive fluid-based position sensor and method Dec. 24, 2002
6429668 Switching element produced in the form of a film Aug. 6, 2002
6429667 Electrically testable process window monitor for lithographic processing Aug. 6, 2002
6414584 Carbon fiber wiper Jul. 2, 2002
6384611 Ice thickness detector May. 7, 2002
6329812 Position measuring device for detecting displacements with at least three degrees of freedom Dec. 11, 2001
6277438 Protective fullerene (C60) packaging system for microelectromechanical systems applications Aug. 21, 2001
6218847 Test pattern for use in measuring thickness of insulating layer and method for using the same Apr. 17, 2001
6116101 Method and apparatus for determining the intermateability of connector assemblies Sep. 12, 2000
6067025 Apparatus and method for detecting the height above a silicon surface May. 23, 2000
6034531 Monitoring of the wear of sliding electrical contacts and its application to the state-dependent and/or predictive maintenance of a device having sliding electrical contacts Mar. 7, 2000
5864241 Magnetic transducer with wear indicator in a magnetic data storage system Jan. 26, 1999
5814999 Method and apparatus for measuring displacement and force Sep. 29, 1998
5751156 Mechanically controllable break transducer May. 12, 1998
5746905 Coating evaluation system May. 5, 1998
5708370 Depth sensor which detects grinding depth by means of change and resistance of resistor also ground during grinding Jan. 13, 1998
5699282 Methods and test structures for measuring overlay in multilayer devices Dec. 16, 1997
5657552 Device for measuring distances on globes or maps Aug. 19, 1997
5623200 Particle measuring apparatus and particle measuring method by the apparatus Apr. 22, 1997
5602486 Impedance sensing of flaws in non-homogenous materials Feb. 11, 1997
5602488 Method and apparatus for adjusting sectional area ratio of metal-covered electric wire Feb. 11, 1997
5559429 MR head lap monitor resistors Sep. 24, 1996

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