| Patents for H03H 9 - Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators (20,116) |
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| 09/05/1989 | US4864259 Ladder-type electric filter circuit apparatus |
| 09/05/1989 | US4864221 Filter, phase-measuring device and method for application of said filter |
| 08/22/1989 | US4859898 Suspension springs for a vibrating piezoelectric plate |
| 08/15/1989 | US4857792 Circular direction vibrator |
| 07/25/1989 | CA1257793A1 Longitudinal mode fiber acoustic waveguide with solid core and solid cladding |
| 07/20/1989 | DE3800251A1 Durchstimmbarer piezokeramischer resonator Tunable piezoceramic resonator |
| 07/19/1989 | CN1034101A 超声延迟线 Ultrasonic delay line |
| 07/18/1989 | US4849760 Surface acoustic wave doppler detector |
| 07/11/1989 | US4847575 Noise filter having multiple layers rolled into an elliptical shape |
| 07/05/1989 | EP0322622A2 Monolithic lattice saw filter |
| 07/05/1989 | CN1033729A Acoustic emission transducer and electrical oscillator |
| 07/04/1989 | US4845397 Constraining mount system for surface acoustic wave devices |
| 07/04/1989 | US4845337 Ovenized oscillator assembly |
| 06/27/1989 | US4841609 A method of manufacturing piezoelectric vibrators |
| 06/21/1989 | CN1033503A Acoustic emission transducer and electrical oscillator |
| 06/20/1989 | US4841470 Surface acoustic wave device for differential phase shift keying convolving |
| 06/20/1989 | US4841265 Surface acoustic wave filter |
| 06/20/1989 | US4841264 Ladder-type ceramic filter |
| 06/15/1989 | WO1989005445A1 An acoustic emission transducer and an electrical oscillator |
| 06/15/1989 | WO1989005199A1 An acoustic emission transducer and an electrical oscillator |
| 06/15/1989 | DE3838923A1 Oberflaechenwellen-bauelement Oberflaechenwellen-component- |
| 06/13/1989 | US4839618 Monolithic crystal filter with wide bandwidth and method of making same |
| 06/13/1989 | US4839607 Frequency-doubling amplifying surface wave receiver |
| 06/07/1989 | EP0319475A1 Piezoelectric resonator |
| 06/06/1989 | US4837533 Ladder-type ceramic filter |
| 06/06/1989 | US4837476 Surface acoustic wave resonator having transducers and reflectors of different periods |
| 06/06/1989 | US4837475 Crystal resonator with low acceleration sensitivity and method of manufacture thereof |
| 05/30/1989 | CA1254994A1 Saw devices with reflection-suppressing fingers |
| 05/24/1989 | EP0316836A2 Surface-acoustic-wave device |
| 05/09/1989 | US4829273 Surface acoustic wave filter |
| 05/03/1989 | EP0314297A2 Three-transducer saw device including one or two apodized transducers having minimum-phase and maximum-phase impulse responses |
| 05/03/1989 | CN2037111U Longitudinal oscillating hollow piezoelectric energy transducer |
| 05/02/1989 | US4827229 Broad band bulk acoustic wave spectrum analyzer/channelizer |
| 04/26/1989 | EP0313342A2 Mode selective magnetostatic wave resonators |
| 04/26/1989 | EP0313025A2 Surface acoustic wave device |
| 04/25/1989 | US4825467 Restricted access television transmission system |
| 04/12/1989 | CN1032413A Acoustic surface wave tv medium-frequency filter with smooth pass band |
| 04/11/1989 | US4821004 Method for the elimination of spurious echos in electro-acoustic delay lines using bulk waves and delay line applying this method |
| 04/11/1989 | CA1252557A1 Saw devices including resistive films |
| 04/11/1989 | CA1252528A1 Electrical filter with acoustic waves |
| 04/06/1989 | WO1989003016A1 Device for determining the relevant thicknesses of variable layers of material on a substrate |
| 04/06/1989 | DE3732594A1 Einrichtung zum ermitteln der jeweiligen dicke von sich veraendernden material-schichten auf einem substrat Means to determine the respective thickness arrange to forming ligand-material layers on a substrate |
| 04/05/1989 | EP0309714A2 Frequency multiplying, amplifying surface wave receiver |
| 04/05/1989 | EP0309713A2 Amplifying surface waves receiver |
| 04/05/1989 | EP0309567A1 Force sensing vibrating beam resonator |
| 04/04/1989 | US4818961 Surface acoustic wave filter with capacitive phase shifter |
| 04/04/1989 | US4818959 Phase equalizer |
| 04/04/1989 | CA1252217A1 Miniature thermostatted oscillator |
| 04/04/1989 | CA1252158A1 Electric filter employing acoustic waves |
| 03/30/1989 | DE3731315A1 Surface-mounted housing for electrical components, component groups or integrated circuits |
| 03/29/1989 | EP0309042A2 Quartz vibrator enclosure for surface mounting |
| 03/29/1989 | EP0309003A2 Surface acoustic wave spectrum analyzer |
| 03/23/1989 | WO1989002675A1 Surface wave device with conversion structure for preventing undesirable reflected waves |
| 03/21/1989 | US4814662 Piezoelectric resonator with either minimal or extreme sensitivity to external pressure stresses |
| 03/21/1989 | US4814658 SAW device with continuous finger pattern |
| 03/15/1989 | EP0307196A2 Edge coupled magnetostatic wave structures |
| 03/15/1989 | EP0307178A2 Diagonally coupled magnetostatic wave resonators |
| 03/09/1989 | DE3729014A1 Surface acoustic wave component having suppression of undesired acoustic waves |
| 03/07/1989 | US4810921 Elastic surface wave device |
| 03/07/1989 | US4810920 Acoustic surface wave multimode filter comprising a bus bar which is thicker than acoustic surface wave resonators |
| 03/02/1989 | DE3827962A1 Filter zur unterdrueckung von oberflaechen-interferenzen fuer satellitenkommunikations-empfaenger Filter to suppress surface until-interferences for satellite communication-empfaenger |
| 02/28/1989 | US4809213 Two-track convolver operating with acoustic waves and with suppression of self-convolution signals |
| 02/07/1989 | USRE32859 Acoustic surface wave devices |
| 02/07/1989 | US4803549 Low-pass filter for limiting the frequency band of a luminance signal |
| 02/07/1989 | US4803449 Filter combining surface acoustic wave resonators |
| 02/07/1989 | US4803448 Cantilever mount of a substrate lamina of a surface wave device |
| 02/07/1989 | US4803427 Precision measuring gauge having sonic delay line with free-standing mode converter armature |
| 01/31/1989 | US4801836 SAW dispersive delay device |
| 01/17/1989 | US4799184 Convolver arangement with acoustic waves |
| 01/17/1989 | US4798990 Device for transmitting electric energy to computers and data nets |
| 01/17/1989 | US4798988 Optimum bias circuit for a convolver |
| 01/17/1989 | US4798987 Surface acoustic wave generator |
| 01/12/1989 | DE3821247A1 Fm-demodulator Fm demodulator |
| 01/10/1989 | CA1248601A1 Staggered saw resonator differential detection |
| 01/03/1989 | US4795934 Mounting of saw devices |
| 12/08/1988 | DE3817728A1 Oberflaechenwellenbauelement Oberflaechenwellenbauelement |
| 12/07/1988 | EP0294090A2 Longitudinal resonator |
| 12/06/1988 | CA1246167A1 Filter functioning with acoustic waves |
| 12/06/1988 | CA1246166A1 Filter functioning with acoustic waves |
| 11/29/1988 | US4787265 Torsion vibrator |
| 11/15/1988 | US4785270 Monolithic lattice saw filter |
| 11/15/1988 | US4785269 Magnetically tuned high overtone bulk acoustic resonator |
| 11/15/1988 | CA1244888A1 Frequency converter used for a receiver which receives signals of a uhf band or a microwave band |
| 11/01/1988 | US4782480 Telephone line access apparatus |
| 11/01/1988 | US4782312 Mode selective magnetostatic wave resonators |
| 10/20/1988 | WO1988008209A1 Force sensing vibrating beam resonator |
| 10/19/1988 | EP0286664A1 Phase measuring device and method implementing a filter. |
| 10/18/1988 | CA1243392A1 Cold-seal package for withstanding high temperatures |
| 10/11/1988 | US4777462 Edge coupler magnetostatic wave structures |
| 10/11/1988 | US4776917 Single crystal wafer of lithium tantalate |
| 10/06/1988 | DE3709692A1 Surface acoustic wave filter arrangement with reduced capacitive and particularly inductive crosstalk |
| 10/05/1988 | EP0285481A1 Surface wave device correcting method, especially for a dispersing filter |
| 10/04/1988 | US4775846 Unidirectional surface acoustic wave device |
| 10/04/1988 | US4775814 Saw device |
| 09/28/1988 | EP0284474A1 Piezo-electric vibrating-reed suspension syringe |
| 09/27/1988 | US4774483 Diagonally coupled magnetostatic wave resonators |
| 09/27/1988 | US4774482 Transducer for a filter arrangement with acoustic waves |
| 09/27/1988 | US4773138 Method of producing transducer isolation in surface acoustic wave processor |
| 09/21/1988 | EP0283368A1 Piezo electric resonator with a low barometrical sensitivity |
| 09/20/1988 | US4772130 Quartz thermometer |