| 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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| 09/27/1995 | EP0674181A2 Micro mechanical component and production process thereof |
| 09/27/1995 | EP0553325B1 Probe for measuring acoustic fields of high intensity |
| 09/25/1995 | CA2145331A1 Micro mechanical component and production process thereof |
| 09/20/1995 | CN2208227Y Vibration sensor with magnetic pendulum |
| 09/19/1995 | US5452264 Resonant acoustic emission transducer |
| 09/19/1995 | US5450747 Method for optimizing piezoelectric surface asperity detection sensor |
| 09/13/1995 | EP0671612A1 Knock sensor |
| 09/12/1995 | US5450498 High pressure low impedance electrostatic transducer |
| 09/12/1995 | US5450372 Rare earth mixed oxide |
| 08/16/1995 | EP0667265A1 Composite wall, in particular a windscreen for a car, comprising an ultrasonic detector for detecting foreign bodies on one of its faces |
| 08/15/1995 | US5442595 Capacitance-type ultrasonic transducer |
| 08/15/1995 | US5440933 Pressure sleeve |
| 07/26/1995 | EP0664531A1 Sound transducer for burglar alarm system |
| 07/12/1995 | EP0662606A2 A vibration sensor |
| 07/12/1995 | EP0662213A1 System for detecting wood-destroying insect infestations in wood |
| 07/05/1995 | CN2203000Y Multi-purpose electronic vibration-controlled switch |
| 07/05/1995 | CN1104768A Sensor for detecting vibration and impact |
| 06/28/1995 | EP0659058A1 Disposable sensing device with cutaneous conformance |
| 06/28/1995 | CN2202308Y Portable unified vibration detector with digit displaying |
| 06/07/1995 | EP0656603A1 Piezoelectric sensor and coordinate input apparatus employing the same |
| 06/07/1995 | EP0515443B1 Optical test apparatus comprising an OTDR |
| 05/24/1995 | CN2198601Y Sensor for detecting vibration or impact |
| 05/16/1995 | US5415026 Vibration warning device including mercury wetted reed gauge switches |
| 04/18/1995 | US5408440 Hydrophone circuit with electrical characteristics of a geophone |
| 03/30/1995 | WO1995005584A3 Two-wire constant current powered transducer |
| 03/30/1995 | DE4434692A1 Ultrasonic sensor |
| 03/23/1995 | WO1995008099A1 Sensor system |
| 03/23/1995 | DE4433679A1 Schwingungserreger Vibration exciter |
| 03/23/1995 | DE4432808A1 Sensor system |
| 03/21/1995 | US5398540 Knock sensor |
| 03/09/1995 | WO1995006525A1 Disposable acoustic pad sensors |
| 03/08/1995 | EP0642004A2 Sound emission transducer |
| 02/23/1995 | WO1995005584A2 Two-wire constant current powered transducer |
| 02/14/1995 | US5389848 Hybrid ultrasonic transducer |
| 02/09/1995 | WO1995004262A1 Knock sensor |
| 02/02/1995 | WO1995003530A1 Monitoring system for representing the states of vibration of a plurality of blades on a rotating wheel |
| 01/26/1995 | WO1995002464A1 High pressure low impedance electrostatic transducer |
| 01/26/1995 | CA2159900A1 High pressure low impedance electrostatic transducer |
| 01/25/1995 | EP0635699A1 Detecting circuit |
| 01/25/1995 | CN2188200Y Piezoelectric vibration pickup |
| 01/24/1995 | US5384448 Thermally stable solenoid utilizing wound electric heating wire |
| 12/21/1994 | EP0629155A1 Movement sensor using mechanical vibrations. |
| 12/08/1994 | DE4318466A1 Micromechanical sensor and method for its production |
| 11/23/1994 | EP0625698A2 Vibration/impact detecting sensor |
| 11/22/1994 | US5365937 Disposable sensing device with contaneous conformance |
| 10/26/1994 | EP0621457A1 Sway measuring device |
| 10/25/1994 | US5357805 Pressure measurement apparatus for inspecting therapeutic energy waves |
| 10/13/1994 | WO1994023242A1 A device and a method for localizing leakages in conduit networks |
| 10/06/1994 | DE4310384A1 Method for digital drift compensation in a charge amplifier circuit |
| 10/04/1994 | US5351546 Monochromatic ultrasonic transducer |
| 09/15/1994 | DE4143402C2 Vibration sensor esp. for IC engine knock detection |
| 09/06/1994 | USH1356 Bomb sensor system |
| 08/30/1994 | US5343286 OTDR having optically switched amplified output onto test fibre to suppress optical amplifier noise between OTDR pluses |
| 08/24/1994 | CN2175415Y Instrument for measuring even vibration of string |
| 08/16/1994 | US5339292 Acoustic transducer |
| 08/02/1994 | US5335210 Integrated liquid crystal acoustic transducer |
| 07/06/1994 | CN2170887Y Detecting device for railway train wheel abrasion fault |
| 07/05/1994 | US5325718 Dual-frequency vibration sensor |
| 06/28/1994 | US5323639 Vibration sensor |
| 06/14/1994 | US5321331 Double-sided fluid sensor for reduced attenuation of shear transverse waves |
| 06/09/1994 | WO1994013021A1 Ferroelectric material based microsensor array and process for the production thereof |
| 05/04/1994 | CN2164032Y Airport noise real-time monitor |
| 04/27/1994 | EP0594399A1 Monochromatic ultrasonic transducer |
| 04/21/1994 | DE4234852A1 Vibration measuring unit for force-measuring balancing machines - contains moving coil pick=up designed as current source with winding of low ohmic resistance and small number of turns and is connected to electrical amplifier |
| 04/07/1994 | DE4233836A1 Circuit arrangement for piezoelectric oscillator - has series oscillating circuit connected in parallel with oscillator tuned to oscillator series resonance frequency |
| 03/31/1994 | WO1994007114A1 System for detecting wood-destroying insect infestations in wood |
| 03/31/1994 | CA2143742A1 System for detecting wood-destroying insect infestations in wood |
| 03/17/1994 | WO1994005207A1 Disposable sensing device with cutaneous conformance |
| 03/08/1994 | US5293555 System and method for locating material fatigue using multiple sensors |
| 03/02/1994 | EP0434702B1 A geophone system |
| 02/15/1994 | US5285688 System for detecting wood-destroying insect infestations in wood |
| 01/04/1994 | US5276276 Coil transducer |
| 12/22/1993 | EP0574925A2 Ultrasonic wave reception apparatus and obstacle detection apparatus |
| 12/22/1993 | CN2150540Y Piezo-electric full orientation vibration sensor |
| 12/14/1993 | US5269292 Pressure pulse source having a positive lens with a pressure sensor |
| 11/30/1993 | US5265619 Process and device for measuring vibrations, in particular nervous trembling in living organisms |
| 11/17/1993 | CN2146739Y Microcomputer tone indicator |
| 10/06/1993 | EP0564070A1 Apparatus for monitoring a fluid medium |
| 09/22/1993 | EP0561566A2 Solid state condenser and microphone |
| 09/19/1993 | CA2092627A1 Solid state condenser and microphone devices |
| 09/16/1993 | WO1993017871A1 Movement detector using mechanical vibrations |
| 09/15/1993 | EP0560507A1 Double-sided fluid sensor for reduced attenuation of shear transverse waves |
| 09/08/1993 | EP0559343A1 Shear transverse wave device having selective trapping of wave energy |
| 08/04/1993 | EP0553325A1 Probe for measuring acoustic fields of high intensity |
| 07/21/1993 | CN2138790Y Acoustoelectric exchanging device of dimond vibration diaphragm |
| 06/15/1993 | US5220234 Shear transverse wave device having selective trapping of wave energy |
| 06/15/1993 | US5218870 Vibration sensor including a reduced capacity lower portion for maintaining airtightness and enhancing reliability |
| 05/18/1993 | US5212421 Vibration transducer assembly |
| 04/29/1993 | WO1993007970A1 Sensors |
| 04/20/1993 | US5203207 Raindrop sensor |
| 03/09/1993 | US5191796 Acoustic-emission sensor |
| 03/03/1993 | EP0467980B1 Process and device for measuring vibrations, in particular nervous trembling in living organisms |
| 03/02/1993 | US5191237 Field-effect transistor type semiconductor sensor |
| 02/18/1993 | DE4119147A1 Nachweisgeraet fuer aktiv abstrahlende flaechen von ultraschall-schwingern Nachweisgeraet overshoots ultrasound for actively emitting surfaces of the |
| 02/07/1993 | WO1993002808A1 Probe for measuring acoustic fields of high intensity |
| 02/07/1993 | CA2093437A1 Probe for measuring acoustic fields of high intensity |
| 02/04/1993 | WO1993002341A1 Knock sensor |
| 01/21/1993 | DE4123786A1 Klopfsensor Knock Sensor |
| 12/23/1992 | WO1992022792A1 Indicator unit for testing the emitter surface of an ultrasonic oscillator |
| 12/16/1992 | EP0518508A1 System and method for locating material fatigue using multiple acoustic emission sensors |