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Class Information
Number: 324/456
Name: Electricity: measuring and testing > A material property using electrostatic phenomenon > For flaw detection
Description: Subject matter wherein electrostatically charged particles are placed upon the test material and collect at flaw locations to indicate the position of the flaw.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8686358 Sub-microsecond-resolution probe microscopy Apr. 1, 2014
8659300 Stress testing of silicon-on-insulator substrates using applied electrostatic discharge Feb. 25, 2014
8552717 Eddy current testing method and eddy current testing apparatus Oct. 8, 2013
8525528 Method and device for evaluating electric performances of an FDSOI transistor Sep. 3, 2013
8169210 Contactless system and method for electrostatic sensing with a high spatial resolution May. 1, 2012
8154301 Method of testing substrate Apr. 10, 2012
7902831 Methods of performing electrostatic discharge testing on a payment card Mar. 8, 2011
7756566 Magnetic resonance imaging for a plurality of selective regions set to object continuously moved Jul. 13, 2010
7689030 Methods and apparatus for testing a component Mar. 30, 2010
7420106 Scanning probe characterization of surfaces Sep. 2, 2008
7397266 System and method for testing the electromagnetic susceptibility of an electronic display unit Jul. 8, 2008
7271593 Contactless system and method for detecting defective points on a chargeable surface Sep. 18, 2007
7248055 Electrostatic discharge transient and frequency spectrum measurement of gap discharge Jul. 24, 2007
7239148 Method and device for measuring surface potential distribution Jul. 3, 2007
7053625 Method and apparatus for detecting wear in components of high voltage electrical equipment May. 30, 2006
7038464 Carrier line oriented spin high voltage leak detection system and method May. 2, 2006
6858448 Method for evaluating and manufacturing a semiconductor device Feb. 22, 2005
6777948 Method and apparatus for detecting wear in components of high voltage electrical equipment Aug. 17, 2004
6650959 Method and apparatus for the detection of foreign materials in moving textile materials Nov. 18, 2003
6614234 Electric discharge machine Sep. 2, 2003
6528985 Non-destructive testing of passive components Mar. 4, 2003
6507197 Electrostatic force detector with cantilever for an electrostatic force microscope Jan. 14, 2003
6469513 Automated stationary/portable test system for applying a current signal to a dielectric material being tested Oct. 22, 2002
6466032 Method and apparatus for identification of the disconnection of a protection device Oct. 15, 2002
6385561 Automatic fault location in cabling systems May. 7, 2002
6326792 Method and apparatus for lifetime prediction of dielectric breakdown Dec. 4, 2001
6150824 Contactless system for detecting subtle surface potential charge patterns Nov. 21, 2000
6119536 Constant distance contactless device Sep. 19, 2000
6034530 Apparatus and method for measuring a movable electric charge induced in a conductive member Mar. 7, 2000
6008653 Contactless system for detecting microdefects on electrostatographic members Dec. 28, 1999
6002259 Electrostatic adhesion tester for thin film conductors Dec. 14, 1999
5959447 Non-contact measurement of electrical waveforms on the surface of a sample using time domain gating Sep. 28, 1999
5949235 System and method for detection and control of ungrounded parts in a production coating line Sep. 7, 1999
5936419 Test method and apparatus utilizing reactive charging currents to determine whether a test sample is properly connected Aug. 10, 1999
5929640 Automated stationary/portable test system for photoconductive drums Jul. 27, 1999
5912559 Apparatus for detection and localization of electrostatic discharge (ESD) susceptible areas of electronic systems Jun. 15, 1999
5812062 Glass coated pipe system and testing method Sep. 22, 1998
5796256 ESD sensor and method of use Aug. 18, 1998
5703487 Detection of charge deficient spot susceptibility Dec. 30, 1997
5624625 Process for the preparation of ceramic materials free from auto-adhesion under and during aging Apr. 29, 1997
5604438 Controlled spark ignition testing apparatus Feb. 18, 1997
5598099 System and method for coincidence detection of ungrounded parts with detectors located within and outside a production coating area Jan. 28, 1997
5594349 Dielecrtric breakdown prediction apparatus and method, and dielectric breakdown life-time prediction apparatus and method Jan. 14, 1997
5504556 Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus Apr. 2, 1996
5448337 Method and apparatus for determining the charge or voltage distribution of an electrophotographic surface Sep. 5, 1995
5410254 Method for optimizing the structure of a transistor to withstand electrostatic discharge Apr. 25, 1995
5376879 Method and apparatus for evaluating electrostatic discharge conditions Dec. 27, 1994
5307672 Method and apparatus to check the state of wear in a covering fabric of a driving belt May. 3, 1994
5200737 System and method for detecting partial discharge of gas-insulated switchgear Apr. 6, 1993
5119030 Apparatus for electrically inspecting the surface of a drum Jun. 2, 1992

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