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Browse by Category: Main > Electrical & Energy
Class Information
Number: 324/687
Name: Electricity: measuring and testing > Impedance, admittance or other quantities representative of electrical stimulus/response relationships > Lumped type parameters > Using capacitive type measurement > With a capacitive sensing means > Having fringing field coupling
Description: Subject matter wherein the sensing means is located in close proximity to a test object and produces an electric field which links or couples the test object to itself, with a change in the electric field caused by the object being utilized to determine a characteristic of the test object.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8633715 Proximity detection system Jan. 21, 2014
8593163 Surface-conforming obscured feature detector Nov. 26, 2013
8564314 Capacitive touch sensor for identifying a fingerprint Oct. 22, 2013
8476912 Obscured feature detector and method Jul. 2, 2013
8441268 Non-contact detection of surface fluid droplets May. 14, 2013
8164354 Proximity detection system Apr. 24, 2012
8115500 Accurate capacitance measurement for ultra large scale integrated circuits Feb. 14, 2012
7855566 Sensor device Dec. 21, 2010
7839282 Capacitance probe for detection of anomalies in non-metallic plastic pipe Nov. 23, 2010
7705615 Extruded capacitive sensor assembly and detection method Apr. 27, 2010
7675296 Method and apparatus for detecting the head pose of a vehicle occupant Mar. 9, 2010
7590495 Inverse method to calculate material properties using a non-resonant technique Sep. 15, 2009
7584060 Inverse method to calculate material properties using an insertion loss test Sep. 1, 2009
7578195 Capacitive sensor Aug. 25, 2009
7560938 Object sensing Jul. 14, 2009
7538562 High performance miniature RF sensor for use in microelectronics plasma processing tools May. 26, 2009
7518382 Miniature sensor chip, especially for finger print sensors Apr. 14, 2009
7508221 Wall detector Mar. 24, 2009
7486086 Method for measuring intrinsic capacitance of a metal oxide semiconductor (MOS) device Feb. 3, 2009
7479791 Circuit arrangement for a capacitive proximity switch Jan. 20, 2009
7427844 Switch assembly, electric machine having the switch assembly, and method of controlling the same Sep. 23, 2008
7358742 DC & AC coupled E-field sensor Apr. 15, 2008
7301351 Printed capacitive sensor Nov. 27, 2007
7256589 Capacitive sensor system with improved capacitance measuring sensitivity Aug. 14, 2007
7126351 Method and device for distinguishing gem stones Oct. 24, 2006
7109726 Object sensing Sep. 19, 2006
7078911 Patent application for a computer motional command interface Jul. 18, 2006
6985556 Proximity detector and radiography system Jan. 10, 2006
6856146 Capacitance probe for surface dielectric constant measurements Feb. 15, 2005
6791342 Electrostatic capacitance sensor Sep. 14, 2004
6756792 Apparatus for measuring parasitic capacitances on an integrated circuit Jun. 29, 2004
6690180 Process and apparatus for determining ratio of fluid components such as methanol and water for reforming feed Feb. 10, 2004
6674294 Drive feedthrough nulling system Jan. 6, 2004
6546795 Wireless liquid level sensing system and method Apr. 15, 2003
6509747 Apparatus for detecting seated condition Jan. 21, 2003
6501285 RF current sensor Dec. 31, 2002
6496021 Method for making a capacitive distance sensor Dec. 17, 2002
6490920 Compensated capacitive liquid level sensor Dec. 10, 2002
6437583 Capacitive distance sensor Aug. 20, 2002
6414497 Paving material analyzer system and method Jul. 2, 2002
6407556 Sensor for indicating changes in the presence of persons or objects Jun. 18, 2002
6320394 Capacitive distance sensor Nov. 20, 2001
6249130 Shielded flat-plate proximity/dielectric properties sensor Jun. 19, 2001
6246244 Method and device for measuring axial deviation in a taut wire alignment system Jun. 12, 2001
6204656 Miniature sensor for lubricant analysis Mar. 20, 2001
6201400 Bulls-eye mid-frequency impedance probe Mar. 13, 2001
6191593 Method for the non-invasive sensing of physical matter on the detection surface of a capacitive sensor Feb. 20, 2001
RE36772 Driven shielding capacitive proximity sensor Jul. 11, 2000
6066954 Apparatus for resolving presence and orientation within a defined space May. 23, 2000
6057692 Measuring arrangement for determining the lift of a valve member May. 2, 2000

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