| Patents for H03H 3 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators (6,646) |
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| 07/30/1991 | US5035202 Frequency fine-adjusting apparatus for a piezo-electric oscillator |
| 07/30/1991 | US5035035 Method of mounting saw devices |
| 07/30/1991 | CA1287190C Correction process for a surface wave device, especially for dispersion filter |
| 07/24/1991 | EP0222012B1 Resonant sensor and method of making same |
| 07/16/1991 | US5033063 Surface-acoustic-wave device |
| 07/16/1991 | US5032755 Method and means for damping modes of piezoelectric vibrators |
| 07/09/1991 | US5030930 Surface-acoustic-wave convolver |
| 07/09/1991 | CA1286024C Saw device |
| 06/11/1991 | US5023503 Super high frequency oscillator/resonator |
| 06/11/1991 | US5022130 Reducing the gamma vector |
| 04/30/1991 | US5011568 Use of sol-gel derived tantalum oxide as a protective coating for etching silicon |
| 04/23/1991 | US5010270 Saw device |
| 04/23/1991 | US5010269 SAW resonator having a broad bandwidth |
| 03/19/1991 | CA1281810C Mounting of saw devices |
| 02/26/1991 | US4995265 Degradation and contamination compensated tuning fork quartz monometer, and method to compensate for tuning quartz degradation and contamination |
| 02/26/1991 | US4995149 Method for hermetically sealing electronic devices |
| 01/30/1991 | EP0410595A2 Trimming circuits |
| 01/30/1991 | EP0250474B1 Method for fabricating a surface wave dispersive filter and filter fabricated according to said method |
| 01/24/1991 | DE3922671A1 Acousto-electronic device with surface wave arrangement - and IC on support, with layer structure with semiconductor crystal layer on another part of support |
| 01/16/1991 | EP0407848A2 Trimming circuit and trimming method performable using such a trimming circuit |
| 01/16/1991 | CN1048636A Surface acoustic wave device |
| 01/15/1991 | US4985709 Magnetostatic wave device |
| 01/12/1991 | CA2019921A1 Trimming circuit and trimming method performable using such a trimming circuit |
| 01/09/1991 | EP0407163A2 Surface acoustic wave device |
| 01/09/1991 | EP0406917A1 Oscillator |
| 01/08/1991 | US4983937 Magnetostatic wave band-pass-filter |
| 11/27/1990 | US4973875 Surface elastic wave device |
| 11/14/1990 | EP0283481B1 Trimming passive components buried in multilayer structures |
| 10/31/1990 | EP0394480A1 Structure of surface acoustic wave transducer having small electrode gaps and method of producing the same |
| 10/18/1990 | DE4011978A1 Saw device with deflection of undesired components - has waveguide to tap-off components propagating obliquely to interdigitated electrodes |
| 09/26/1990 | EP0020729B1 Inductorless monolithic crystal filter network |
| 09/04/1990 | US4954795 Surface acoustic wave filter for suppressing surface to surface interference for a satellite communication receiver |
| 09/04/1990 | US4954793 Filter bank |
| 09/04/1990 | US4953834 Pendulum with bending spring joint |
| 08/28/1990 | CA1273275A1 Preferential etching of a piezoelectric material |
| 08/21/1990 | US4950935 Surface-acoustic-wave convolver |
| 08/16/1990 | EP0275338B1 Pivotal-spring connection, and manufacturing method |
| 08/01/1990 | EP0379840A2 Quartz tuning fork manometer |
| 07/25/1990 | EP0379404A2 A multilayer hybrid circuit |
| 07/24/1990 | US4943751 Surface acoustic wave element |
| 07/17/1990 | US4942327 Solid state electronic device |
| 07/10/1990 | CA1271556A1 Constraining mount system for surface acoustic wave devices |
| 07/03/1990 | US4939487 Surface acoustic wave filter |
| 06/27/1990 | EP0375360A2 Higher order transverse mode suppression in surface acoustic wave resonators |
| 06/19/1990 | US4935658 Crystal resonator with low acceleration sensitivity and method of manufacture thereof |
| 06/12/1990 | US4933588 Higher order transverse mode suppression in surface acoustic wave resonators |
| 06/05/1990 | US4931752 Polyimide damper for surface acoustic wave device |
| 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 |
| 05/10/1990 | DE3932451A1 Doppelkammelektrode fuer oberflaechenwellenvorrichtungen und herstellungsverfahren hierfuer Interdigital electrode for oberflaechenwellenvorrichtungen and manufacturing processes for here |
| 05/02/1990 | EP0366597A2 Method of manufacturing saw devices and the thus obtained saw devices |
| 05/01/1990 | US4920641 Method of manufacturing an electronic part |
| 04/19/1990 | WO1990004285A1 Structure of surface acoustic wave transducer having small electrode gaps and method of producing the same |
| 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 |
| 04/05/1990 | DE3933006A1 SAW device with interdigital transducers at input and output - having reflectors for improved characteristic without increase of chip area |
| 03/28/1990 | EP0360037A2 Damping mass for SW elements |
| 03/27/1990 | US4910839 Method of making a single phase unidirectional surface acoustic wave transducer |
| 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 |
| 03/13/1990 | US4908586 Compact encapsulated filter assembly for printed circuit boards and method of manufacture thereof |
| 03/06/1990 | US4906885 Electrode material for surface acoustic wave devices and surface acoustic wave device using the same |
| 03/06/1990 | US4905357 Method for manufacturing resonators with beveled ends |
| 02/28/1990 | EP0188604B1 Improved surface acoustic wave filter |
| 02/13/1990 | US4900969 Surface acoustic wave convolver |
| 01/25/1990 | DE3910460A1 Thickness shear mode crystal resonator and method for its production |
| 01/02/1990 | US4890370 Manufacturing method for integrated resonator |
| 01/02/1990 | US4890369 Method of manufacturing saw devices |
| 11/30/1989 | WO1989011756A1 Automatically self-calibrating oscillators in heterodyned radio receivers |
| 11/28/1989 | CA1263473A1 Isotropic acoustic wave substrate |
| 11/23/1989 | EP0342390A1 Casing for electric components, packages or integrated circuits |
| 10/18/1989 | EP0337703A2 Surface acoustic wave filter |
| 09/26/1989 | US4870312 Surface wave device having anti-reflective shield |
| 09/26/1989 | CA1261461A1 Elastic surface wave device |
| 09/12/1989 | US4866325 Surface acoustic wave transducer |
| 08/15/1989 | US4857870 Method of manufacturing a surface wave dispersive filter and a filter manufactured in accordance with this method |
| 07/05/1989 | EP0322622A2 Monolithic lattice saw filter |
| 06/27/1989 | US4841609 A method of manufacturing piezoelectric vibrators |
| 06/13/1989 | US4839618 Monolithic crystal filter with wide bandwidth and method of making same |
| 06/13/1989 | US4839607 Frequency-doubling amplifying surface wave receiver |
| 06/06/1989 | US4837476 Surface acoustic wave resonator having transducers and reflectors of different periods |
| 06/06/1989 | US4837475 Crystal resonator with low acceleration sensitivity and method of manufacture thereof |
| 06/06/1989 | US4836882 Shockproofing |
| 05/30/1989 | CA1254994A1 Saw devices with reflection-suppressing fingers |
| 05/23/1989 | US4833430 Coupled-dual resonator crystal |
| 05/09/1989 | US4829273 Surface acoustic wave filter |
| 05/03/1989 | EP0314297A2 Three-transducer saw device including one or two apodized transducers having minimum-phase and maximum-phase impulse responses |
| 04/26/1989 | EP0313342A2 Mode selective magnetostatic wave resonators |
| 04/11/1989 | US4821004 Method for the elimination of spurious echos in electro-acoustic delay lines using bulk waves and delay line applying this method |
| 04/11/1989 | US4820897 Process for producing miniature piezoelectric devices using laser machining and devices obtained by this process |
| 04/11/1989 | CA1252557A1 Saw devices including resistive films |
| 04/11/1989 | CA1252528A1 Electrical filter with acoustic waves |
| 04/05/1989 | EP0309714A2 Frequency multiplying, amplifying surface wave receiver |
| 04/05/1989 | EP0309713A2 Amplifying surface waves receiver |
| 04/04/1989 | CA1252158A1 Electric filter employing acoustic waves |
| 03/15/1989 | EP0307196A2 Edge coupled magnetostatic wave structures |