| Patents for H03H 9 - Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators (20,116) |
|---|
| 05/22/1979 | US4156214 Multipole resonator |
| 05/22/1979 | CA1055126A1 Acoustic wave devices involving perturbation of acoustic velocity by diffusion of metals |
| 05/15/1979 | US4155057 Surface acoustic wave ring filter |
| 05/15/1979 | US4155056 Cascaded grating resonator filters with external input-output couplers |
| 05/15/1979 | US4155055 Wave device having a reverse domain grating |
| 05/01/1979 | US4152616 Piezoelectric crystal mounting |
| 04/24/1979 | US4151543 Lead electrode structure for a semiconductor chip carried on a flexible carrier |
| 04/24/1979 | US4151492 Surface acoustic wave grating |
| 04/24/1979 | US4151432 High density, mechanical strength, electrical resistance |
| 04/24/1979 | CA1053364A1 Surface acoustic wave transmission device and method of manufacturing same |
| 04/17/1979 | US4150346 Acoustic periodic structure |
| 04/10/1979 | US4149102 Piezoelectric monolithic crystal element having improved response |
| 04/10/1979 | US4148530 Cut angles for piezoelectric quartz crystal elements |
| 04/04/1979 | EP0001361A1 Charge transfer device and transversal filter comprising such device |
| 03/27/1979 | US4146852 Phase weighted acoustic reflective array compressor |
| 03/27/1979 | US4146851 Acoustic surface wave device |
| 03/27/1979 | US4146808 Thinned withdrawal weighted surface acoustic wave interdigital transducers |
| 03/20/1979 | US4145627 Crimped seal piezoelectric resonator package |
| 03/20/1979 | US4144747 Simultaneously resonated, multi-mode crystal force transducer |
| 03/13/1979 | US4144508 Surface acoustic wave filters |
| 03/13/1979 | US4144507 Surface acoustic wave resonator incorporating coupling transducer into reflecting arrays |
| 03/13/1979 | US4144501 Quadrature FM detector including low reactance phase shifter |
| 03/06/1979 | US4143343 Acoustic surface wave interaction device |
| 03/06/1979 | US4143340 Acoustic surface wave device with improved transducer |
| 02/27/1979 | US4142163 Surface acoustic wave device with reduced spurious responses |
| 02/27/1979 | CA1049647A1 Temperature compensated surface wave device |
| 02/27/1979 | CA1049646A1 Acoustic surface wave device with harmonic coupled transducers |
| 02/20/1979 | US4140984 Mechanical filter |
| 02/13/1979 | US4139793 Integral resonant support arms for piezoelectric microresonators |
| 02/13/1979 | US4139791 Damping structure for elastic surface wave device |
| 02/06/1979 | CA1048143A1 Comb filter for video processing |
| 02/06/1979 | CA1048116A1 Acoustic surface wave filter having combined split-isolated and split-connected coupler |
| 01/30/1979 | US4137511 Electromechanical filter and resonator |
| 01/30/1979 | US4137470 Magnetostrictive elastic surface wave structure |
| 01/30/1979 | CA1047615A1 Surface acoustic wave filter |
| 01/23/1979 | US4136297 Four corner piezoelectric crystal support |
| 01/23/1979 | CA1047130A1 Surface acoustic wave device and method of manufacturing same |
| 01/16/1979 | US4135108 Quartz resonator with electrodes that do not adhere to the crystal |
| 01/09/1979 | US4134087 Amplitude weighted surface acoustic wave device |
| 12/26/1978 | US4131816 Mechanism and method for supporting a tuning fork-type quartz crystal element |
| 12/19/1978 | US4130813 Surface wave device having enhanced reflectivity gratings |
| 12/19/1978 | US4130812 Band pass electromechanical filters |
| 12/19/1978 | US4130771 Method of adjusting the frequency of a crystal resonator and reducing ageing effects |
| 12/19/1978 | CA1044772A1 Monolithic crystal filter |
| 12/19/1978 | CA1044771A1 Surface wave programmable oscillator |
| 12/12/1978 | US4129837 Elastic surface wave oscillator |
| 12/05/1978 | US4128819 Surface elastic wave device |
| 11/28/1978 | US4127833 Band pass filter |
| 11/28/1978 | CA1043432A1 Temperature compensated surface acoustic wave devices |
| 11/21/1978 | US4126839 Surface acoustic wave apparatus |
| 11/21/1978 | US4126838 Uniform surface acoustic wave transducer configuration having improved frequency selectivity |
| 11/21/1978 | US4126837 Impedance element and band-rejection filter using the same |
| 11/21/1978 | US4126802 Torsional mode CT or DT cut quartz resonator |
| 11/21/1978 | US4126800 Surface elastic wave device using side lobes |
| 11/07/1978 | US4124829 Electromechanical filter |
| 11/07/1978 | US4124809 Quartz crystal resonator |
| 11/07/1978 | CA1042081A1 Surface elastic wave electromechanical device |
| 10/31/1978 | US4123680 Piezoelectric quartz crystal products and fabrication methods therefor |
| 10/31/1978 | CA1041618A1 Surface wave filter |
| 10/10/1978 | US4119934 Bulk acoustic wave delay line |
| 10/03/1978 | CA1039818A1 Filter circuit having an acoustic surface-wave filter device |
| 09/26/1978 | US4117424 Acoustic wave devices |
| 09/19/1978 | CA1038942A1 Surface elastic wave filter |
| 09/12/1978 | USRE29763 Crystal vibrator mounting |
| 09/12/1978 | US4114119 Wide band low loss acoustic wave device |
| 09/12/1978 | US4114118 Electromechanical filter having encapsulated input and terminal circuit capacitors |
| 09/12/1978 | US4114116 Two-dimensional surface acoustic wave signal processor |
| 09/12/1978 | US4114062 Thickness shear resonator for use as an over-tone quartz crystal |
| 09/05/1978 | US4112396 Echo annexation device |
| 09/05/1978 | US4112360 Apparatus and method for tuning electro-mechanical filter components |
| 09/05/1978 | US4112324 Mounting for plural piezoelectric vibrator units |
| 09/05/1978 | US4112323 Circular flexural mode piezoelectric vibrator with integral support arms |
| 09/05/1978 | US4112147 Method of manufacturing a monolithic crystal filter |
| 08/29/1978 | US4110714 Surface acoustic wave filter |
| 08/29/1978 | US4110655 Tin-gold alloy |
| 08/29/1978 | US4110653 Method of modifying the temperature drift of the propagation time of surface elastic waves and a device obtained by said method |
| 08/22/1978 | US4109172 High piezoelectric coupling-temperature compensated berlinite substrate member for surface acoustic wave devices |
| 08/01/1978 | US4104553 Fastening and suspension element for a piezoelectric resonator |
| 08/01/1978 | US4104549 Magnetite ferrite for magnetostrictive vibrators |
| 07/25/1978 | US4103263 Triple-transit-suppressed bulk acoustic wave delay line |
| 07/18/1978 | US4101852 Microacoustic shear bulk wave device |
| 07/18/1978 | US4101848 Oscillator |
| 07/11/1978 | US4100506 Electromechanical filter |
| 07/04/1978 | US4099149 Single side band monolithic crystal filter |
| 07/04/1978 | US4099147 Bulk acoustic delay device |
| 07/04/1978 | US4099078 Quartz crystal tuning fork with three electrodes on each major tine face |
| 07/04/1978 | US4098070 Digital display electronic wristwatch |
| 06/27/1978 | US4097825 Surface acoustic wave tapped delay line |
| 06/27/1978 | US4097717 Water bed mattress with regulated heating means therefor and controlling the heat loss therefrom and the method of making the same |
| 06/20/1978 | US4096477 Identification system using coded passive transponders |
| 06/20/1978 | US4096461 Magnet system for tunable YIG oscillator and tunable YIG filter |
| 06/20/1978 | US4096456 Surface elastic wave filter |
| 06/20/1978 | US4096455 Surface wave termination for saw device |
| 06/20/1978 | US4096454 Amplitude and delay equalization of surface acoustic wave filters in amplitude modulation system |
| 06/06/1978 | US4093914 Method of measuring parameters of a crystal filter |
| 05/23/1978 | US4091345 Electromechanical filter having a wide temperature range |
| 05/23/1978 | US4091303 Piezoelectric quartz vibrator with heating electrode means |
| 05/16/1978 | US4090153 Piezoelectric substrate, epoxy resin wave absorber |
| 05/09/1978 | US4088969 Tapped surface acoustic wave delay line |
| 05/02/1978 | US4087716 Multi-layer element consisting of piezoelectric ceramic laminations and method of making same |