| Patents for G01H 11 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties (3,253) |
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| 01/03/2002 | CA2413410A1 Two-way mechano-electrical transducer |
| 12/20/2001 | WO2001046456A3 Biological sensor |
| 12/13/2001 | WO2001039253A3 Diagnostic layer and methods for detecting structural integrity of composite and metallic materials |
| 12/12/2001 | EP1162467A2 Acceleration sensor |
| 12/12/2001 | CN2465160Y Differential magnetic and electric relative vibration speed sensor |
| 12/11/2001 | US6330206 Hydrophone for acoustic or seismic wave reception |
| 12/06/2001 | US20010047686 Acceleration sensor |
| 12/04/2001 | US6326795 Capacitance detection system and method |
| 11/30/2001 | CA2349270A1 Acceleration sensor |
| 11/28/2001 | EP1158284A2 Methods and apparatus for high cycle fatigue life test |
| 11/25/2001 | CA2309540A1 Vibration sensing device |
| 11/22/2001 | US20010043029 Acoustic transducer and method of making the same |
| 11/22/2001 | US20010043028 Acoustic transducer and method of making the same |
| 11/20/2001 | US6320239 Surface micromachined ultrasonic transducer |
| 11/20/2001 | US6318175 Micromechanical sensor and method for the manufacture thereof |
| 10/30/2001 | US6308573 3-Dimensional comb structure and actuator and inertia detection sensor both using the comb structure |
| 10/25/2001 | WO2001079794A1 Electronic sensor with an inertial system for detecting vibrations |
| 10/24/2001 | CN1319187A Device and method for determining frequency and amplitude of oscillating structure, especially for measuring acceleration or rotational rates |
| 10/18/2001 | WO2001077694A1 Ultrananocrystalline diamond cantilever wide dynamic range acceleration/vibration/pressure sensor |
| 10/17/2001 | CN1073211C Pressure sleeve with thread ring |
| 10/11/2001 | WO2001075272A2 Turbine engine foreign object damage detection system |
| 10/10/2001 | EP1143242A2 Remote self-powered structure monitor |
| 10/02/2001 | US6295871 Vibration sensing device |
| 09/20/2001 | WO2001068388A1 System, tyre and method for determining the behaviour of a tyre in motion |
| 09/13/2001 | US20010020384 Vibration pickup with pressure sleeve |
| 09/13/2001 | DE10009169A1 Schwingungsaufnehmer mit einer Druckhülse Vibration sensor with a pressure sleeve |
| 09/12/2001 | EP0852708B1 Mechanical signal processor based on micromechanical oscillators and intelligent acoustic detectors and systems based thereon |
| 09/12/2001 | EP0815420B1 Vibration monitoring system |
| 09/11/2001 | US6286371 Monitor head for ultrasound control by pulse echo process |
| 08/29/2001 | EP0858721A4 Acoustic transducer |
| 08/14/2001 | US6275447 Sound generating apparatus, a sound detection apparatus, an acoustic sensor, and an acoustic living body measuring apparatus |
| 08/08/2001 | CN2442249Y Medium hole radial composite piezoelectric ceramic wave detector |
| 08/07/2001 | US6271620 Acoustic transducer and method of making the same |
| 07/24/2001 | US6263736 Electrostatically tunable resonance frequency beam utilizing a stress-sensitive film |
| 07/19/2001 | WO2001051898A1 Downhole densitometer |
| 07/19/2001 | DE10044482A1 Vibration pick=up, has jamming element that keeps the shaft of a screw within the bore of the pick=up |
| 07/19/2001 | DE10044480A1 Vibration pick=up for internal combustion engine, has pressure sheath provided with blocking element that is protruded from internal peripheral surface of central bore |
| 07/17/2001 | US6262517 Pressure resistant piezoelectric acoustic sensor |
| 07/11/2001 | EP0897327B1 Device and its use for producing electromagnetic pulses |
| 07/10/2001 | US6259372 Self-powered wireless transducer |
| 07/10/2001 | US6257065 Strain gauge vibration sensor |
| 06/28/2001 | WO2001046456A2 Biological sensor |
| 06/26/2001 | US6250162 Ultrasonic sensor |
| 06/21/2001 | WO2001044771A1 Vibration pickup comprising a pressure sleeve |
| 06/21/2001 | WO2001044765A1 Wide frequency band micromachined capacitive microphone/hydrophone and operating method |
| 06/21/2001 | WO2001044756A2 Vibration sensor with a pressure housing |
| 06/21/2001 | DE19960325A1 Schwingungsaufnehmer mit einer Druckhülse Vibration sensor with a pressure sleeve |
| 06/21/2001 | DE19960324A1 Schwingungsaufnehmer mit einer Druckhülse Vibration sensor with a pressure sleeve |
| 06/19/2001 | US6247351 Vibration pickup with a pressure sleeve |
| 06/13/2001 | DE19950215A1 Moving machine part wear and breakage monitoring method for a machine tool, involves changing generated response signal corresponding to additional surface interference waves generated |
| 06/12/2001 | US6246155 Bimorph piezoelectric device for acceleration sensor and method of its manufacture |
| 06/07/2001 | DE10045847A1 Cavitation sensor, for cleaning or sterilization units, has ultrasound-absorbing coating arranged about piezoelectric element and pipeline, which limits area closed by piezoelectric element |
| 05/31/2001 | WO2001039253A2 Diagnostic layer and methods for detecting structural integrity of composite and metallic materials |
| 05/30/2001 | EP1102996A1 Device and method for determining frequency and amplitude of an oscillating structure, especially for measuring acceleration or rotational rates |
| 05/16/2001 | EP1098719A1 Method of manufacturing a capacitive ultrasound transducer |
| 05/08/2001 | US6227054 Vibration wave detecting method and vibration wave detector |
| 05/03/2001 | WO2000072631A3 Electrostatic ultrasonic transducer and method of making the same |
| 05/02/2001 | CN2428762Y 噪声监控器 Noise Monitor |
| 05/02/2001 | CN1293350A Method for analyzing surficial acoustic field of high-speed moving object |
| 05/01/2001 | US6223601 Vibration wave detecting method and vibration wave detector |
| 04/24/2001 | US6220078 Vibration pickup with a pressure sleeve |
| 04/12/2001 | DE19944452A1 Positionsdetektor mit akustischen Oberflächenwellen A position detector surface acoustic wave |
| 04/11/2001 | EP1091617A2 Semiconductor device |
| 04/11/2001 | CN1291065A 半导体装置 Semiconductor device |
| 04/05/2001 | WO1996026455B1 Inductive sensor and method for detecting displacement of a body |
| 04/04/2001 | EP1075098A9 Electronic converter of an acoustic signal to a pseudo-digital signal and bidirectional communication method by acoustic waves |
| 03/28/2001 | CN1289435A Contact Elecment for an ultrasound sensor |
| 03/27/2001 | US6205872 Broadband vibration sensor apparatus |
| 03/22/2001 | WO2001020781A1 Device and method for high-sensitivity resolution detection |
| 03/22/2001 | WO2001020276A1 Acoustic sensors using microstructures tunable with energy other than acoustic energy |
| 03/20/2001 | US6204773 Mercury vibration warning switch |
| 03/15/2001 | WO2001019136A1 Acoustic transducer panel |
| 03/15/2001 | WO2001018509A1 Method and apparatus for energy efficient tacking of resonant devices |
| 03/15/2001 | DE10007839A1 Vibrationsdetektoreinrichtung und zugehöriges Verfahren Vibration detection means and associated method |
| 02/28/2001 | CN1285704A Electronic converter, timer having same and bidirection communication method |
| 02/27/2001 | US6192759 Remote self-powered structure monitor |
| 02/14/2001 | CN2419586Y Vibration sensor with magnet sensitive resistor |
| 02/14/2001 | CN1283779A Supersonic flowmeter of supersonic sensor |
| 02/08/2001 | WO2001010064A1 Sound communication system between a portable unit and a communication terminal |
| 02/08/2001 | WO2001009689A1 System for automatically setting a portable object with a clock function |
| 02/07/2001 | EP1075098A1 Electronic converter of an acoustic signal to a pseudo-digital signal and bidirectional communication method by acoustic waves |
| 02/07/2001 | EP1074820A2 Ultrasonic transducer and ultrasonic flowmeter |
| 01/31/2001 | EP1072034A1 Contact element for an ultrasound sensor |
| 01/30/2001 | US6178820 Sensor for measuring acceleration and sound pressure |
| 01/18/2001 | DE19932838A1 Verfahren und Einrichtung zur Bestimmung des zeitlichen Verlaufs der Stosswelle in einem schlagbeanspruchten ferromagnetischen Bauteil Method and apparatus for determining the timing of the shock wave in a shock claimed ferromagnetic component |
| 01/17/2001 | EP1069417A2 Method and device for determining the temporal form of the shock wave in a ferrmomagnetic member which is objected to impacts |
| 01/17/2001 | EP1069414A1 Hydrophone with low distortion |
| 01/13/2001 | CA2314633A1 Low distortion hydrophone |
| 01/09/2001 | US6170148 Method of making an encapsulated transducer with an alignment plug |
| 12/28/2000 | DE19925979A1 Vorrichtung und Verfahren zur Bestimmung von Frequenz und Amplitude einer schwingenden Struktur, insbesondere zur Messung von Beschleunigungen oder Drehraten Apparatus and method for determining frequency and amplitude of a vibrating structure, in particular for the measurement of accelerations or angular rate |
| 12/14/2000 | WO2000075676A1 Device and method for determining frequency and amplitude of an oscillating structure, especially for measuring acceleration or rotational rates |
| 12/12/2000 | US6160763 Towed array hydrophone |
| 12/06/2000 | EP1057037A1 Knock sensor with low sensitivity dispersion |
| 12/05/2000 | US6155118 Apparatus for testing a device that generates an audible sound in a vehicle occupant compartment |
| 11/30/2000 | WO2000072631A2 Electrostatic ultrasonic transducer and method of making the same |
| 11/01/2000 | CN2404109Y Noise detector for broadcasting spot |
| 11/01/2000 | CN1272037A Under water listening device for receiving sound wave or earthquake wave |
| 10/26/2000 | CA2306678A1 Hydrophone for reception of acoustic or seismic waves |
| 10/19/2000 | DE19917372A1 Surface temperature measurement device, derives temperature of surface from time variation of temperature detected by applying sensing tip using mathematical model |
| 10/17/2000 | US6131270 Method of manufacturing an encapsulated transducer with an integrally formed full length sleeve and a component alignment preform |