| Patents for H03H 9 - Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators (20,116) |
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| 06/19/1990 | US4935658 Crystal resonator with low acceleration sensitivity and method of manufacture thereof |
| 06/13/1990 | EP0372646A2 Quartz oscillator arrangement |
| 06/12/1990 | US4933588 Higher order transverse mode suppression in surface acoustic wave resonators |
| 06/05/1990 | US4931755 Surface-acoustic-wave device with a capacitance coupled between input and output |
| 06/05/1990 | US4931752 Polyimide damper for surface acoustic wave device |
| 05/30/1990 | EP0370996A2 Piezoelectric crystal element based in GaPO4 |
| 05/23/1990 | EP0369835A1 Interdigital transducer for an SAW filter |
| 05/23/1990 | EP0122918B1 Acoustic charge transport device and method |
| 05/22/1990 | US4928069 Amplifying surface wave receiver |
| 05/22/1990 | US4927580 Method for manufacturing electronic device including a vibration generating element |
| 05/17/1990 | WO1990005409A1 Surface acoustic wave devices |
| 05/16/1990 | EP0367864A1 Surface acoustic wave fibre with variable bandpass characteristics |
| 05/15/1990 | US4926146 Parallel-to-serial signal processor using surface acoustic waves |
| 05/15/1990 | US4926143 Oscillator using H-shaped single crystal silicon vibrator |
| 05/15/1990 | US4926086 Piezoelectric resonator |
| 05/15/1990 | US4926083 Optically modulated acoustic charge transport device |
| 05/09/1990 | EP0367181A2 Surface acoustic wave filter device |
| 05/09/1990 | CN2057047U Hall "tuning fork" wave filter |
| 05/08/1990 | US4924132 Temperature sensitive quartz oscillator crystal with temperature coefficient controlled in manufacture |
| 05/02/1990 | EP0366597A2 Method of manufacturing saw devices and the thus obtained saw devices |
| 05/02/1990 | EP0366562A1 Detachable holding device for a piezoelectric resonator inside a housing |
| 05/01/1990 | US4922141 Phase-locked loop delay line |
| 05/01/1990 | US4920641 Method of manufacturing an electronic part |
| 04/25/1990 | EP0365268A2 Length longitudinal resonator |
| 04/24/1990 | US4920296 Electronic component having a plate-shaped element |
| 04/19/1990 | WO1990004285A1 Structure of surface acoustic wave transducer having small electrode gaps and method of producing the same |
| 04/18/1990 | EP0363495A1 Surface acoustic wave device |
| 04/17/1990 | US4918350 Energy-trapping-by-frequency lowering-type piezoelectric resonance device |
| 04/17/1990 | US4918349 Surface acoustic wave device having apodized transducer provided with irregular pitch electrode group |
| 04/11/1990 | EP0362478A1 Acoustic delay line |
| 04/10/1990 | US4916416 Method for the correction of a surface wave device, especially for a reflective array compressor |
| 04/10/1990 | US4916413 Package for piezo-oscillator |
| 04/10/1990 | US4916348 Surface acoustic wave scattering grating |
| 04/05/1990 | WO1990003692A1 Surface wave interdigital transducer and surface wave filter with symmetrical or predetermined asymmetrical transfer characteristic between input and output |
| 04/05/1990 | WO1990003691A1 Converter with omission weighting for surface wave filters |
| 04/05/1990 | WO1990003690A1 Surface wave filter |
| 04/05/1990 | DE3933006A1 SAW device with interdigital transducers at input and output - having reflectors for improved characteristic without increase of chip area |
| 04/05/1990 | DE3833101A1 Wandler mit weglasswichtung fuer oberflaechenwellenfilter Converter with omission weighting for oberflaechenwellenfilter |
| 04/05/1990 | DE3832944A1 Oberflaechenwellen-interdigitalwandler und oberflaechenwellen-filter mit symmetrischer oder vorgebbar unsymmetrischer uebertragungscharakteristik zwischen eingang und ausgang Oberflaechenwellen inter-digital converters and oberflaechenwellen-filter with symmetrical or asymmetrical transmission characteristic can be specified between input and output |
| 04/03/1990 | US4914722 Shock absorber for ceramic filters |
| 03/28/1990 | EP0360672A1 Highly selective piezoelectric monolithic fibre |
| 03/28/1990 | EP0360037A2 Damping mass for SW elements |
| 03/27/1990 | US4912356 Saw slanted array correlator (SAC) with separate amplitude compensation channel |
| 03/27/1990 | US4910839 Method of making a single phase unidirectional surface acoustic wave transducer |
| 03/22/1990 | DE3831815A1 Serial/parallel converter for high bit rates |
| 03/21/1990 | EP0358795A1 Piezoceramic device for acoustic waves and method for adjusting the frequency and/or the transit time |
| 03/20/1990 | US4910483 Acoustic surface wave filter device with asymmetric transducers and method of manufacturing same |
| 03/20/1990 | US4910481 For radio communication equipment |
| 03/20/1990 | US4910426 Three-transducer saw device including one or two apodized transducers having minimum-phase and maximum-phase impulse responses |
| 03/14/1990 | EP0358040A2 Conductive surface layer |
| 03/13/1990 | US4908542 Saw tapered transducers |
| 03/07/1990 | CN1007105B Stress and temp. compensated surface acoustic wave devices |
| 03/06/1990 | US4906885 Electrode material for surface acoustic wave devices and surface acoustic wave device using the same |
| 02/28/1990 | EP0356266A1 Compact resonator filter using the piezoelectric effect |
| 02/28/1990 | EP0188604B1 Improved surface acoustic wave filter |
| 02/20/1990 | US4903297 Restricted access television transmission system |
| 02/20/1990 | US4902925 Reflectionless transducer |
| 02/13/1990 | US4900972 Electrode for piezoelectric composites |
| 02/13/1990 | US4900971 Face shear mode quartz crystal resonator |
| 02/13/1990 | US4900970 Energy-trapping-type piezoelectric resonance device |
| 02/13/1990 | US4900969 Surface acoustic wave convolver |
| 02/07/1990 | EP0354117A1 Piezoelectric transducer for volume wave generation |
| 02/06/1990 | US4899076 Piezoelectric oscillator |
| 02/06/1990 | US4898641 Controlled deviation of value of double refraction |
| 01/31/1990 | EP0353073A2 Acoustic surface wave devices |
| 01/25/1990 | DE3910460A1 Thickness shear mode crystal resonator and method for its production |
| 01/17/1990 | EP0350993A1 Surface acoustic wave device having multilayer structure with reduction in electromagnetic feedthrough |
| 01/17/1990 | EP0350814A2 Piezoelectric vibration component |
| 01/16/1990 | US4894580 Chip-type resonator and method of manufacturing the same |
| 01/16/1990 | US4894577 Piezoelectric vibrator wherein the relative vibration level of unnecessary vibrations is damped, and method of damping the relative vibration level of unnecessary vibrations of the piezoelectric vibrator |
| 01/10/1990 | EP0350443A1 Piezoelectric resonator |
| 01/09/1990 | US4893161 Quantum-well acoustic charge transport device |
| 01/03/1990 | CN1038556A Synchronizing signal extracting sound surface wave filter |
| 01/02/1990 | US4891469 Piezoelectric resonator housing for surface mounting |
| 01/02/1990 | US4890370 Manufacturing method for integrated resonator |
| 01/02/1990 | US4890369 Method of manufacturing saw devices |
| 12/20/1989 | CN1038162A Vibrating type transducer and manufacturing process thereof |
| 12/06/1989 | CN2049050U Rubber liner for ceramics parts |
| 11/30/1989 | WO1989011756A1 Automatically self-calibrating oscillators in heterodyned radio receivers |
| 11/28/1989 | US4884001 Monolithic electro-acoustic device having an acoustic charge transport device integrated with a transistor |
| 11/28/1989 | CA1263473A1 Isotropic acoustic wave substrate |
| 11/23/1989 | EP0343000A2 Length-extensional piezo-electric resonator |
| 11/23/1989 | EP0342390A1 Casing for electric components, packages or integrated circuits |
| 11/07/1989 | US4879487 Surface-acoustic-wave device |
| 10/31/1989 | US4878036 Surface elastic wave filter |
| 10/24/1989 | US4876476 Chip type piezoelectric device |
| 10/19/1989 | DE3811482A1 Temperature sensor |
| 10/18/1989 | EP0337703A2 Surface acoustic wave filter |
| 10/10/1989 | US4873465 2T-cut piezoelectric resonator using coupled contour modes |
| 10/03/1989 | US4870729 Method of making a noise filter |
| 09/27/1989 | EP0334705A1 Resonators consisting of solid elastic material and high-stability oscillators |
| 09/26/1989 | US4870313 Piezoelectric resonators for overtone oscillations |
| 09/26/1989 | US4870312 Surface wave device having anti-reflective shield |
| 09/26/1989 | CA1261929A1 Vibrating beam force transducer with angled isolator springs |
| 09/26/1989 | CA1261461A1 Elastic surface wave device |
| 09/26/1989 | CA1260132A1 Surface acoustic wave spectrum analyzer |
| 09/21/1989 | WO1989008949A1 Surface acoustic wave device |
| 09/19/1989 | US4868444 Surface acoustic wave device |
| 09/12/1989 | US4866325 Surface acoustic wave transducer |
| 09/05/1989 | US4864470 Mounting device for an electronic component |