| Patents for H03H 9 - Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators (20,116) |
|---|
| 05/11/1994 | EP0596169A1 Method of manufacture and circuit arrangement for a narrow band filter with a high quality factor |
| 05/10/1994 | US5311096 KT cut width-extensional mode quartz crystal resonator |
| 05/04/1994 | EP0595644A1 Flat packaged piezoelectric device using glass-ceramic composite material comprising forsterite |
| 05/03/1994 | US5309126 Spatially varying multiple electrode acoustic wave filter and method therefor |
| 05/03/1994 | US5309057 Weighted transducer for surface acoustic wave filter |
| 05/03/1994 | US5309004 Semiconductors, gallium arsenide |
| 05/03/1994 | CA2020411C Surface acoustic wave device |
| 04/28/1994 | WO1994009563A1 A saw structure having serially coupled transducers |
| 04/27/1994 | EP0594117A1 Piezoelectric filter and its production method |
| 04/26/1994 | US5307035 Low loss surface wave filter |
| 04/26/1994 | US5307034 Ultrathin multimode quartz crystal filter element |
| 04/26/1994 | US5306978 Surface acoustic wave unidirectional transducer having floating electrodes |
| 04/20/1994 | EP0593070A2 Oscillator |
| 04/20/1994 | CN1085698A 振荡器 Oscillators |
| 04/19/1994 | US5304965 Surface wave transducer, especially of split finger design, with suppression of reflections of terminal transducer fingers |
| 04/19/1994 | US5304887 Crystal resonator device |
| 04/19/1994 | US5304459 At-cut crystal oscillating reed and method of etching the same |
| 04/19/1994 | US5303457 Method for packaging microelectronic frequency selection components |
| 04/13/1994 | EP0592353A1 Saw detector |
| 04/13/1994 | EP0591918A1 Electro-acoustic hybrid integrated circuit and manufacturing method thereof |
| 04/13/1994 | CN1085362A A saw structure having serially coupled transducers |
| 04/12/1994 | US5302880 Piezoelectric tuning fork resonator and method of manufacturing the same |
| 04/12/1994 | US5302879 Temperature/reference package, and method using the same for high pressure, high temperature oil or gas well |
| 04/12/1994 | US5302877 Metal film on lithium tetraborate single crystal substrate |
| 04/12/1994 | CA2010722C Composite longitudinal vibration mechanical filter and method of manufacturing same |
| 04/07/1994 | DE4233836A1 Circuit arrangement for piezoelectric oscillator - has series oscillating circuit connected in parallel with oscillator tuned to oscillator series resonance frequency |
| 04/05/1994 | US5300902 Surface acoustic wave device for band-pass filter having small insertion loss and predetermined pass-band characteristics for broad band |
| 03/31/1994 | WO1994007307A1 Unidirectional wave transducer |
| 03/29/1994 | US5299247 Signal processing device having frequency-adaptive sampling |
| 03/29/1994 | US5298772 Integrated heterostructure acoustic charge transport (HACT) and heterostructure insulated gate field effects transistor (HIGFET) devices |
| 03/29/1994 | US5298333 Conductive surface layer |
| 03/23/1994 | EP0588261A1 Surface acoustic wave element |
| 03/22/1994 | US5296824 Low loss wide bandwidth parallel channel acoustic filter |
| 03/16/1994 | EP0587407A2 Piezoelectric semiconductor and process for production thereof |
| 03/16/1994 | EP0587068A1 Surface acoustic wave element and method of manufacturing the same |
| 03/15/1994 | US5294898 Wide bandwidth bandpass filter comprising parallel connected piezoelectric resonators |
| 03/15/1994 | US5294862 Ladder-type piezo-electric filter |
| 03/15/1994 | US5294860 Piezoelectric filter |
| 03/15/1994 | US5294859 Surface acoustic wave filter device |
| 03/15/1994 | US5294858 Surface acoustic wave device |
| 03/10/1994 | DE4330438A1 Surface acoustic wave device connected to electric circuit - has interdigital transducer pattern on SAW substrate having set ratio of conductance of electric load or supply to radiation conductance of reed electrodes |
| 03/10/1994 | DE4229974A1 SAW component with piezoelectric substrate - uses interdigitating partial transducers connected in parallel with defined number of prongs and wave propagation speed |
| 03/10/1994 | DE4228223A1 Reflector for SAW filter - includes free electrode filter modifying reflection characteristic provided by electrode finger pairs |
| 03/09/1994 | EP0585863A1 Surface acoustic wave device |
| 03/08/1994 | US5293138 Integrated circuit element, methods of fabrication and utilization |
| 03/03/1994 | WO1994005134A1 Electronic component |
| 03/03/1994 | DE4227502A1 Receiver for amplitude sampled time character signals - with two input amplifiers selectively switched in to select reception frequency for optimum sensitivity |
| 03/02/1994 | EP0584761A1 Surface acoustic wave resonator filter |
| 03/02/1994 | CN1083284A 电子元件 Electronic component |
| 03/01/1994 | US5291159 Acoustic resonator filter with electrically variable center frequency and bandwidth |
| 02/24/1994 | DE4227362A1 SAW element for narrow bandpass filter - uses resonator cascade with each resonator having interdigitated transducers and strip reflectors supported by respective piezo electric substrate |
| 02/22/1994 | US5289075 Resonator for a thermostatically-controlled oscillator having low power consumption and rapid heating |
| 02/22/1994 | US5289073 Unidirectional surface acoustic wave transducer |
| 02/17/1994 | WO1994003972A1 Acoustic wave devices for controlling high frequency signals |
| 02/15/1994 | US5287036 Method for realizing a microelectronic filter |
| 02/15/1994 | US5287035 SAW detector |
| 02/09/1994 | CN1081795A 压电陶瓷滤波电路及压电陶瓷滤波器 Piezoelectric ceramic filter circuit and piezoelectric ceramic filter |
| 02/08/1994 | US5284148 Intracavity ultrasound diagnostic probe using fiber acoustic waveguides |
| 02/03/1994 | DE4224930A1 Coded reflective delay circuit for surface wave application, e.g. vehicle identification - has electrode finger sections offset against each other in main propagation direction by quarter wavelength of centre frequency |
| 02/02/1994 | EP0580826A1 Sealed electronic package providing in-situ metallization |
| 02/01/1994 | US5283496 Thickness shear crystal resonator and manufacturing method therefor |
| 02/01/1994 | US5283458 Temperature stable semiconductor bulk acoustic resonator |
| 02/01/1994 | US5283444 Increased well depth hact using a strained layer superlattice |
| 01/26/1994 | EP0580307A1 Surface acoustic wave filter device |
| 01/26/1994 | EP0580304A1 Intracavity ultrasound diagnostic probe using fiber acoustic waveguides |
| 01/26/1994 | EP0580025A1 Piezoelectric vibrator and manufacturing method thereof |
| 01/26/1994 | EP0579871A1 Surface acoustic wave convolver |
| 01/25/1994 | US5281935 Quartz filter |
| 01/25/1994 | US5281888 Piezoelectric/electrostrictive element having auxiliary electrode disposed between piezoelectric/electrostrictive layer and substrate |
| 01/25/1994 | US5281883 Surface acoustic wave device with improved junction bonding and package miniaturization |
| 01/25/1994 | US5281882 Surface acoustic wave element |
| 01/25/1994 | CA2015227C Surface elastic wave filter |
| 01/20/1994 | WO1994001931A1 Piezoelectric ceramic filter circuit and piezoelectric ceramic filter |
| 01/12/1994 | EP0577652A1 Surface-wave device with a feature designed to avoid acoustic-wave interference. |
| 01/05/1994 | EP0577347A2 Wave filter having electrically well isolated dielectric resonators |
| 01/05/1994 | EP0577089A1 Surface acoustic wave device, and demodulation device and communication system using the same |
| 12/29/1993 | EP0576340A1 Surface wave filter with reflective arrays |
| 12/29/1993 | EP0575948A1 Quartz device and manufacturing method thereof |
| 12/28/1993 | US5274529 Electronic device with molded case |
| 12/28/1993 | US5274345 Dual function reflector structures for interdigital saw transducer |
| 12/28/1993 | US5274297 Quartz resonator vibrating in a fundamental torsion mode |
| 12/28/1993 | US5274293 Piezoelectric filter |
| 12/22/1993 | EP0575174A1 Composite duplex filter |
| 12/21/1993 | US5272663 Apparatus and method for wide bandwidth adaptive filtering |
| 12/21/1993 | US5272595 Terminal structure for an electronic device |
| 12/14/1993 | US5270606 Processing robust acoustic reflectors |
| 12/08/1993 | EP0482033B1 Saw device tapped delay line and apparatus using same |
| 12/07/1993 | US5268859 Process for obtaining compensation quantity to compensate the nonuniformity of a surface wave convolver |
| 12/01/1993 | EP0572215A1 Surface acoustic wave device |
| 12/01/1993 | EP0571365A1 Surface-wave reflector-filter. |
| 11/30/1993 | US5265316 Coating stem, case and inner lead with solder contianing 90% lead and rest tin and/or silver, fixing by melting the solder |
| 11/25/1993 | WO1993023923A1 Dual function reflector structures for interdigital saw transducers |
| 11/25/1993 | CA2131829A1 Dual function reflector structures for interdigital saw transducers |
| 11/23/1993 | US5265267 Integrated circuit including a surface acoustic wave transformer and a balanced mixer |
| 11/23/1993 | US5264751 Unilateral surface wave transducer |
| 11/23/1993 | US5264717 HACT structure with reduced surface state effects |
| 11/18/1993 | EP0569977A1 Elastic surface wave filter |
| 11/18/1993 | DE4223001C1 Surface-wave component with mode conversion structure - uses conversion structure formed by displaced part structures on substrate body |
| 11/16/1993 | US5262977 Surface acoustic wave convolver |
| 11/16/1993 | US5262659 Nyquist frequency bandwidth hact memory |