Patents
Sitemap › H03 - Basic electronic circuitry › H03H - Impedance networks, e.g. resonant circuits; Resonators › H03H 9 - Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
Patents for H03H 9 - Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators (20,116)
04/1981
04/28/1981US4264882 Electric signal transmission device employing a ferromagnetic amorphous ribbon
04/28/1981CA1100199A1 Electromechanical filter and resonator
04/21/1981US4263571 Surface acoustic wave filter
04/21/1981US4263569 Surface acoustic wave arrangement with improved suppression of spurious signals
04/16/1981WO1981001086A1 Dual-passband surface acoustic wave filter
04/14/1981US4262227 Thickness-shear piezo-electric vibrator with additional mass for mode suppression
04/02/1981WO1981000939A1 Surface acoustic waves converter
04/01/1981EP0026114A1 Surface acoustic wave device
03/1981
03/31/1981US4259649 Electroacoustic delay line apparatus
03/31/1981US4259607 Nickel, silver, chromium
03/31/1981US4259606 Fast warm-up oven controlled piezoelectric oscillator
03/25/1981EP0025605A1 Inductance device
03/24/1981US4258342 Elastic surface wave device
03/17/1981US4257022 Magnetostrictive rod filters
03/17/1981US4257021 Elastic surface wave filter
03/17/1981US4257020 Piezoelectric resonator
03/11/1981EP0024927A2 Surface acoustic wave resonator device
03/11/1981EP0024495A1 Acoustic pulse delay line system for measuring distances along a magnetostrictive wire
03/10/1981US4255727 Electromechanical filters
03/10/1981US4255726 Surface acoustic wave filter
03/03/1981US4254388 Frequency selector apparatus
03/03/1981US4254387 Acoustic wave devices
02/1981
02/24/1981US4253119 Interface system for surface wave integratable filter
02/24/1981US4253036 Subminiature tuning fork quartz crystal vibrator with nicrome and palladium electrode layers
02/10/1981US4250474 Continuous beam steering acoustic wave transducer
02/10/1981US4250473 Circuit board having printed thereon conductive patterns to be connected with input and output lead wires of acoustic surface wave filter element
02/03/1981USRE30506 Tuning fork-type quartz crystal oscillator and method for stabilizing the vibration frequency thereof
02/03/1981US4249146 Surface acoustic wave resonators utilizing harmonic frequencies
02/03/1981CA1095126A1 Amplitude and delay equalization of surface acoustic- wave filters
01/1981
01/28/1981EP0023171A1 Temperature stabilized high frequency oscillator
01/28/1981EP0023162A1 Electromechanical band-pass filters
01/28/1981EP0023109A1 Surface acoustic wave filter device
01/27/1981US4247836 Acoustic wave devices
01/27/1981US4247835 Surface acoustic wave devices
01/27/1981US4247827 Surface acoustic wave filter arrangement
01/27/1981US4247797 Rectangular AT-cut quartz resonator
01/21/1981EP0022700A1 Magnetostatic wave device comprising a conductive-track changing structure
01/21/1981EP0022690A1 Electromechanical filter elements and band-pass filter incorporating same
01/21/1981EP0022559A1 Piezoelectric plate resonator excitable to thickness shear vibrations
01/20/1981US4246554 Inductorless monolithic crystal filter network
01/20/1981CA1094229A1 Electrostatically deformable thin silicon membranes
01/13/1981US4245201 Lithium tantalate substrate
01/13/1981US4245200 Lithium tantalate substrate
01/13/1981US4245173 Beveled, coupled mode piezo-electric resonator
01/13/1981CA1093677A1 Method of modifying the temperature drift of the propagation time of surface elastic waves and a device obtained by said method
01/07/1981EP0021878A1 Magnetostatic wave device comprising attenuating means, and process for its manufacture
12/1980
12/30/1980US4242671 Transponders
12/30/1980US4242653 Triple transit suppression for bulk acoustic delay lines
12/30/1980CA1092667A1 Variable delay device for electrical signals
12/23/1980US4241321 Electromechanical filter
12/10/1980EP0019632A1 Quartz crystal resonator
12/02/1980US4237433 Surface acoustic wave resonators with integrated internal coupler reflectors
12/02/1980US4237432 Surface acoustic wave filter with feedforward to reduce triple transit effects
12/02/1980CA1090915A1 Surface acoustic wave apparatus
11/1980
11/27/1980WO1980002626A1 Acoustic wave device
11/26/1980EP0019511A1 Process for compensating temperature variations in surface-wave devices and pressure sensor for carrying out this process
11/26/1980EP0019185A2 Electrical component
11/25/1980US4236095 Surface acoustic wave device comprising piezoelectric substrate having zinc oxide layer on α-alumina layer
11/18/1980US4234860 Piezoelectric filter and process for the manufacture thereof
11/18/1980US4234859 Elastic surface wave device and method for making the same
11/18/1980US4234812 Thickness-width shear quartz crystal vibrator
11/18/1980US4234811 Supporting structure for a thickness-shear type crystal oscillator for watches
11/13/1980WO1980002485A1 Elastic surface wave apparatus
11/11/1980US4233573 Carrier concentration controlled surface acoustic wave variable delay devices
11/11/1980CA1089544A1 Elastic surface wave device
11/04/1980US4232240 High piezoelectric coupling X-cuts of lead potassium niobate, Pb2 Knb5 O15 , for surface acoustic wave applications
11/04/1980US4232109 Method for manufacturing subminiature quartz crystal vibrator
11/04/1980CA1089084A1 Acoustic surface wave devices
11/04/1980CA1089083A1 Acoustic surface wave devices
10/1980
10/21/1980US4229718 Wide-bandwidth monolithic crystal filter
10/21/1980CA1088211A1 Circuit board having printed thereon conductive patterns to be connected with input and output lead wires of acoustic surface wave filter element
10/15/1980EP0017533A1 Acoustic delay line with weak direct coupling
10/15/1980EP0017467A1 Method of manufacturing acoustic surface wave device
10/15/1980EP0017103A1 Coupled mode piezo-electric resonator
10/15/1980EP0016979A1 Acoustic wave filter
10/15/1980EP0016976A1 Composite piezoelectric device resonating at a low frequency
10/07/1980US4227156 Circuit for at least two frequencies
10/02/1980WO1980002091A1 Filter based on the use of surface acoustic waves
10/02/1980WO1980002090A1 Filter based on the use of surface acoustic waves
09/1980
09/30/1980US4224725 Method for manufacturing an acoustic surface wave interaction device
09/23/1980US4224683 Multiple-channel acousto-electric convolver
09/23/1980US4224586 Monolithic crystal filter having a passband symmetrical about a center frequency
09/23/1980US4224549 Lead potassium niobate substrate member for surface acoustic wave applications
09/23/1980US4224548 Singly rotated cut of Y-axis boule lead potassium niobate, Pb2 KNb.sub. O15, for surface acoustic wave applications
09/16/1980US4223286 Surface acoustic wave resonator
09/16/1980US4223285 Elastic surface wave filter
09/16/1980US4223284 Acoustic surface wave device
09/16/1980US4223177 Structure and method for sealing electronic parts
09/09/1980US4221986 Piezoelectric resonator with improved suspension
09/02/1980USRE30394 Signal bandpass filter apparatus
09/02/1980US4220888 Double and triple rotated quartz plates for surface waves
09/02/1980US4220885 Tuning fork mounting with damping means
08/1980
08/26/1980US4219756 Mounting structure of a quartz crystal unit
08/26/1980US4219754 Temperature compensation by positioning of plural piezoelectric vibrators in an electronic wristwatch
08/19/1980US4218631 Electrode structure for thickness mode piezoelectric vibrating elements
08/12/1980US4217564 Elastic surface wave device for treating high frequency signals
08/06/1980EP0014117A1 Surface acoustic wave transducer and filter comprising same
08/05/1980US4216402 Sealed piezoelectric resonator with integral mounting frame
08/05/1980US4216401 Surface acoustic wave (SAW) pressure sensor structure
07/1980
07/29/1980CA1082798A1 Magnetostrictive elastic surface wave structure
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