| 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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| 02/25/1999 | WO1999008809A1 Monitor head for ultrasound control by pulse echo process |
| 02/24/1999 | EP0897327A1 Method and device for producing electromagnetic pulses |
| 02/18/1999 | DE19735101A1 Pulse=echo ultrasound test head |
| 02/16/1999 | US5872307 Vibration pick-up with pressure sleeve |
| 02/10/1999 | CN2307289Y Sound corrector for pocket computer |
| 02/09/1999 | US5870482 Miniature silicon condenser microphone |
| 02/04/1999 | WO1999005486A2 Vibration monitoring system |
| 01/26/1999 | US5864066 Vibration detecting sensor with temperature compensating piezoelectric element |
| 01/21/1999 | WO1999002995A1 Bimorph piezoelectric device for acceleration sensor and method of its manufacture |
| 01/13/1999 | EP0659058B1 Disposable sensing device with cutaneous conformance |
| 01/12/1999 | US5859561 Differential load amplifier for piezoelectric sensors |
| 01/05/1999 | US5856620 Acceleration sensor |
| 01/05/1999 | CA2075961C Optical test apparatus |
| 12/30/1998 | CN1203360A 振动探测器 Vibration detectors |
| 12/23/1998 | EP0886131A1 Device for measuring noise in a fluid-carrying pipe |
| 12/23/1998 | CN1202964A Composite structure resin cure monitoring using an optical fiber grating sensor |
| 12/16/1998 | CN1202301A Acoustic transducer |
| 12/09/1998 | EP0882217A1 Encapsulated transducer and method of manufacture |
| 12/09/1998 | EP0882216A1 Encapsulated transducer with an alignment plug and method of manufacture |
| 12/09/1998 | EP0882215A1 Encapsulated transducer with sleeve and component alignment |
| 12/02/1998 | EP0881477A2 Vibration wave detecting method and vibration wave detector |
| 12/02/1998 | EP0716628B1 Disposable acoustic pad sensors |
| 11/17/1998 | US5838637 Hydrophone and process for manufacturing it |
| 11/17/1998 | US5837887 In an internal combustion engine |
| 11/17/1998 | US5836203 Magnetically excited flexural plate wave apparatus |
| 11/10/1998 | US5834650 Vibration detecting sensor |
| 11/10/1998 | US5834649 Vibration sensor including a movable magnet positioned between stationary magnets |
| 11/04/1998 | EP0874978A1 Pressure wave sensor |
| 10/27/1998 | US5827965 Navigation device employing an electret vibration sensor |
| 10/27/1998 | CA2176162C Low distortion hydrophone |
| 10/06/1998 | US5818224 Encapsulated transducer with an integrally formed full length sleeve and a component alignment preform and method of manufacture |
| 09/30/1998 | CN1194370A Vibrative rotary sensor with ac forced and sensitive circuit |
| 09/29/1998 | US5815466 Hydrophone structure with reverse bend of piezoelectric element |
| 09/15/1998 | US5807268 Disposable sensing device with contaneous conformance |
| 09/09/1998 | EP0862729A1 Composite structure resin cure monitoring using an optical fiber grating sensor |
| 09/02/1998 | EP0862049A2 Vibration sensor |
| 08/27/1998 | WO1998037388A1 Miniature silicon condenser microphone |
| 08/27/1998 | WO1998037378A1 Sensor for detecting translatory movements |
| 08/25/1998 | US5798460 For use in a navigation apparatus |
| 08/25/1998 | US5798453 For a vibration pickup |
| 08/20/1998 | DE19800870A1 Resonant electromechanical oscillation sensor |
| 08/20/1998 | DE19706572A1 Sensor zur Erfassung translatorischer Bewegungen Sensor for detecting translational movements |
| 08/19/1998 | EP0858721A2 Acoustic transducer |
| 08/12/1998 | EP0857945A2 Ferrofluid sensor |
| 08/11/1998 | US5792956 Signal conditioning circuit apparatus and method |
| 08/04/1998 | US5789844 Acoustic transducer |
| 07/15/1998 | EP0852708A1 Mechanical signal processor based on micromechanical oscillators and intelligent acoustic detectors and systems based thereon |
| 07/14/1998 | US5780741 Sensor employing a sliding magnet suspended on ferrofluid |
| 07/14/1998 | US5780727 Electromechanical transducer |
| 07/09/1998 | WO1998019140A3 Surface micro-mechanic ultrasonic transducer |
| 07/01/1998 | CN1186458A Elastmeric micro electromechanical systems |
| 06/24/1998 | EP0849574A2 Vibration sensors for printer diagnostics |
| 06/24/1998 | EP0848806A1 A detector for detecting vibrations |
| 06/23/1998 | US5770941 Encapsulated transducer and method of manufacture |
| 06/23/1998 | US5770155 Composite structure resin cure monitoring apparatus using an optical fiber grating sensor |
| 05/28/1998 | WO1998022785A1 Sensor for measuring acceleration and sound pressure |
| 05/27/1998 | EP0844470A1 Knocking detecting sensor |
| 05/27/1998 | EP0694145B1 A device and a method for localizing leakages in conduit networks |
| 05/07/1998 | WO1998019140A2 Surface micro-mechanic ultrasonic transducer |
| 05/07/1998 | DE19643893A1 Ultraschallwandler in Oberflächen-Mikromechanik Ultrasonic transducers in surface micromachining |
| 05/06/1998 | EP0840092A2 A complementary electrostatic driving apparatus for a micro-actuator |
| 04/30/1998 | DE19549527A1 Sound signal reception method especially for short sound pulses |
| 04/29/1998 | EP0710355B1 Monitoring system for representing the states of vibration of a plurality of blades on a rotating wheel |
| 04/14/1998 | US5739686 Electrically insulating cantilever magnetometer with mutually isolated and integrated thermometry, background elimination and null detection |
| 04/14/1998 | US5739626 Piezoelectric sensor |
| 04/14/1998 | US5739418 Vibration pick-up and method of producing the same |
| 04/07/1998 | US5736643 Monitoring system for representing vibration conditions of a multiplicity of blades on a rotating disc |
| 03/17/1998 | US5729075 Tuneable microelectromechanical system resonator |
| 03/17/1998 | US5729074 Micro mechanical component and production process thereof |
| 03/17/1998 | US5728938 Noise measuring device for a differential gear assembly |
| 03/17/1998 | US5728089 Microfabricated structure to be used in surgery |
| 03/12/1998 | DE19636279A1 Measuring arc furnace electrode vibrations |
| 02/25/1998 | EP0824381A1 Elastomeric micro electromechanical systems |
| 02/10/1998 | US5717141 Method and apparatus for evaluating vibrations of a rotary body while maintaining the rotary body in a static or non-rotational state |
| 02/05/1998 | DE19701997A1 Damped pre-amplifier for use with electrodynamic seismic transducer |
| 01/27/1998 | US5712562 Encapsulated transducer with an alignment plug and method of manufacture |
| 01/14/1998 | EP0719404B1 Sensor system |
| 01/07/1998 | EP0815420A1 Vibration dosimeter worn by an operator |
| 12/29/1997 | EP0813435A1 Package integrated accelerometer |
| 12/29/1997 | EP0708689B1 High pressure low impedance electrostatic transducer |
| 12/02/1997 | US5694375 Ultra-broadband hydrophone |
| 12/02/1997 | US5693181 Applying etch resistant mask to surface of wafer defining grid of longitudinal and latitudinal channels, etching pattern of grooves continuous in one direction and discontinuous in the other to provide gaps isolating grooves |
| 11/13/1997 | WO1997041970A1 Method and device for producing electromagnetic pulses |
| 11/13/1997 | DE19618498A1 Arrangement for monitoring pump in dishwasher etc. |
| 11/13/1997 | CA2253859A1 Method and device for producing electromagnetic pulses |
| 11/04/1997 | US5684324 Acoustic transducer chip |
| 10/28/1997 | US5682075 Porous gas reservoir electrostatic transducer |
| 10/22/1997 | EP0801927A1 Sensing device with cutaneous conformance |
| 10/22/1997 | CN1162559A Vibration receiver and manufacturing method therefor |
| 10/14/1997 | US5677894 Hydrophone structure with center pin |
| 10/14/1997 | US5677488 Piezoelectric film transducer sytem for bearings |
| 10/07/1997 | US5675087 Fastener characterization with an electromagnetic acoustic transducer |
| 10/07/1997 | US5674258 Packaged integrated accelerometer |
| 10/02/1997 | DE19612541A1 Vibration pick-up with pressure sleeve in housing e.g. for engine knock sensor |
| 09/18/1997 | DE19612013A1 Piezoelectric wide-band transducer e.g. for measuring sound waves in solids |
| 09/17/1997 | CN1159573A Vibration test sensor |
| 09/11/1997 | DE19647834A1 Sensor for detecting oscillations or vibrations |
| 09/03/1997 | CN1158415A Vibration detecting sensor |
| 09/02/1997 | US5663504 Sensor system |
| 08/13/1997 | CN1156817A Sensor |