| Patents for H03H 3 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators (6,646) |
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| 03/04/1980 | US4191934 High efficiency wide band surface acoustic wave coupler processors |
| 03/04/1980 | US4191905 Sealed housings for a subminiature piezoelectric vibrator |
| 02/12/1980 | US4188596 Elastic surface wave device |
| 02/12/1980 | CA1071751A1 Piezoelectric tuning device and method for making the same |
| 01/29/1980 | CA1070784A1 Elastic surface wave transmitting device for eliminating multiple transit echoes |
| 01/22/1980 | US4185218 Piezoelectric acoustic surface wave filter coupler |
| 01/15/1980 | US4184132 Electromechanical filters |
| 01/15/1980 | US4183126 Process for preparing quartz oscillator |
| 12/13/1979 | WO1979001101A1 Quartz crystal resonator |
| 12/12/1979 | EP0006054A1 Acoustic surface wave filter and intermediate frequency stage for a television receiver comprising same |
| 12/12/1979 | EP0005953A1 Surface acoustic wave devices |
| 12/11/1979 | US4178571 Acoustic surgave wave resonator devices |
| 12/11/1979 | US4178566 Quartz crystal tuning fork vibrator for a crystal oscillator |
| 11/27/1979 | US4176030 Method for forming a quartz crystal vibrator |
| 09/04/1979 | US4166563 Transfer machine for sealing electronic or like components under vacuum |
| 08/28/1979 | US4166258 Thin-film integrated circuit with tank circuit characteristics and applications to thin-film filters and oscillators |
| 08/28/1979 | US4166228 Temperature compensated reflective array for surface acoustic wave processing |
| 08/14/1979 | US4164676 Piezoelectric crystalline film of zinc oxide containing additive elements |
| 07/31/1979 | US4163202 Tuning apparatus and method of producing the same |
| 07/24/1979 | US4162415 Acoustic surface wave transducer and filter built around this transducer |
| 07/03/1979 | US4160219 Transducer electrodes for filters or delay lines utilizing surface wave principles |
| 06/26/1979 | US4159435 Acoustic wave devices employing surface skimming bulk waves |
| 06/19/1979 | US4158823 Transducer electrodes for filter or delay lines utilizing surface waves |
| 06/05/1979 | US4157466 Crystal oven for maintaining crystals at a predetermined temperature |
| 05/22/1979 | CA1055126A1 Acoustic wave devices involving perturbation of acoustic velocity by diffusion of metals |
| 05/15/1979 | US4154025 Method for preparing oxide piezoelectric material wafers |
| 04/24/1979 | US4151492 Surface acoustic wave grating |
| 04/24/1979 | CA1053364A1 Surface acoustic wave transmission device and method of manufacturing same |
| 04/10/1979 | US4149064 Method and apparatus for adjusting electrical networks consisting of synthetic foils |
| 03/13/1979 | US4144508 Surface acoustic wave filters |
| 03/06/1979 | US4143343 Acoustic surface wave interaction device |
| 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 |
| 02/13/1979 | US4139791 Damping structure for elastic surface wave device |
| 02/13/1979 | CA1048606A1 Apparatus for automatic adjustment of frequency of mechanical resonators |
| 01/30/1979 | US4137470 Magnetostrictive elastic surface wave structure |
| 01/23/1979 | US4135963 Lithium tantalate single crystal growth from a platinum-rhodium crucible in an inert gas, nitrogen or reducing gas atmosphere |
| 01/23/1979 | CA1047130A1 Surface acoustic wave device and method of manufacturing same |
| 01/23/1979 | CA1047113A1 Apparatus for automatic adjustment of frequency of mechanical resonators |
| 12/26/1978 | US4131484 Machining electrodes |
| 12/19/1978 | US4130813 Surface wave device having enhanced reflectivity gratings |
| 12/19/1978 | US4130771 Method of adjusting the frequency of a crystal resonator and reducing ageing effects |
| 12/19/1978 | CA1044761A1 Apparatus for sorting mechanical resonators according to inherent frequency |
| 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 |
| 11/07/1978 | CA1042081A1 Surface elastic wave electromechanical device |
| 10/31/1978 | US4123680 Piezoelectric quartz crystal products and fabrication methods therefor |
| 10/03/1978 | CA1039818A1 Filter circuit having an acoustic surface-wave filter device |
| 09/19/1978 | CA1038942A1 Surface elastic wave filter |
| 09/05/1978 | US4112360 Apparatus and method for tuning electro-mechanical filter components |
| 09/05/1978 | US4112147 Method of manufacturing a monolithic crystal filter |
| 09/05/1978 | US4112134 Vacuum deposition method for frequency adjustment of piezoelectric resonators |
| 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 |
| 08/29/1978 | CA1037574A1 Surface wave filter and method |
| 08/15/1978 | US4107349 Method of adjusting the frequency of piezoelectric resonators |
| 07/18/1978 | US4101848 Oscillator |
| 06/20/1978 | US4096456 Surface elastic wave filter |
| 06/20/1978 | US4096455 Surface wave termination for saw device |
| 06/13/1978 | US4095199 Electrical lc resonant circuit |
| 05/16/1978 | US4090153 Piezoelectric substrate, epoxy resin wave absorber |
| 05/16/1978 | US4089092 Method of suspending electrical components |
| 05/02/1978 | US4087714 Three phase unidirectional transducer |
| 04/04/1978 | US4083021 Transducer for surface wave filters with reduced diffraction |
| 03/28/1978 | US4080696 Method of making piezoelectric vibrator |
| 03/14/1978 | US4079342 Fanned multistrip coupler filters |
| 02/21/1978 | US4075582 Surface acoustic wave device |
| 02/21/1978 | US4075516 Diffraction electroacoustic transducer |
| 02/07/1978 | US4072915 Acoustic surface wave devices |
| 01/24/1978 | US4070502 Method of treating piezoelectric resonators |
| 01/17/1978 | US4069507 Device for the two-dimensional reading of optical images, using elastic surface waves |
| 01/10/1978 | US4068141 Transducer for surface wave filters with an asymmetrical transfer function |
| 01/03/1978 | US4066985 Television IF filter constructed in accordance with the surface wave principle |
| 12/27/1977 | US4065789 Surface wave device for use in a ghost cancellation system |
| 12/27/1977 | US4065736 Amplitude and phase programmable acoustic surface wave matched filter |
| 12/27/1977 | US4065684 Piezoelectric resonator for timepieces and method for making same |
| 12/20/1977 | US4063910 Apparatus for automatically adjusting the frequency of piezoelectric resonators in the form of bars or plates |
| 12/13/1977 | US4062154 Process for automatically adjusting the frequency of piezoelectric resonators in the form of bars or plates |
| 12/06/1977 | US4061816 Integrally sintered ceramic complex and method of manufacturing the same |
| 11/29/1977 | US4060833 Transducer arrangement for a surface acoustic wave device to inhibit the generation of multiple reflection signals |
| 09/27/1977 | US4051448 Surface acoustic wave transmission device and method of manufacturing same |
| 09/27/1977 | US4050126 Method for adjusting frequency-temperature characteristic of GT cut quartz oscillator |
| 09/06/1977 | US4047129 Elastic surface wave filter |
| 08/09/1977 | US4041419 Surface elastic wave analogue correlator |
| 07/26/1977 | US4038615 Elastic surface wave device |
| 07/12/1977 | US4035775 Temperature compensated acoustic surface wave device |
| 07/05/1977 | US4034325 Coarse and fine adjustment warp coil |
| 07/05/1977 | US4034318 Elastic surface wave filter |
| 06/14/1977 | US4030050 Acoustic surface wave filters |
| 06/07/1977 | US4028646 Elastic surface wave devices and method for making the same |
| 05/24/1977 | US4025880 Elastic surface wave transmitting device for eliminating multiple transit echoes |
| 05/24/1977 | US4025806 Suspension and package for piezo-electric resonators |
| 05/10/1977 | US4023124 Acoustic surface wave devices |
| 05/10/1977 | US4021898 Method of adjusting the frequency of vibration of piezoelectric resonators |
| 05/03/1977 | US4021761 Filter circuit having an acoustic surface-wave filter device |
| 05/03/1977 | US4021657 Surface elastic wave memory correlator |
| 04/26/1977 | US4020426 Temperature compensation circuit for crystal oscillator |
| 04/19/1977 | US4019074 LiNbO3 saw device |