| Patents for H01L 41 - Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof (34,459) |
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| 10/06/1981 | US4293373 Boron dopes, silicon frame, etching |
| 09/29/1981 | US4292562 Mounting arrangement for crystal assembly |
| 09/29/1981 | US4291626 Assembly of piezoelectric element unit and sheet metal mount for ignition device |
| 09/29/1981 | CA1109974A1 Push buttons |
| 09/23/1981 | EP0036187A1 Head readjustment assembly for a video tape recorder |
| 09/22/1981 | US4290983 Piezoelectric and pyroelectric film and method for preparing the film |
| 09/22/1981 | CA1109247A1 Method of producing a dielectric with perowskite structure |
| 09/15/1981 | US4289987 Magnetostrictive non-contacting pressure detection system |
| 09/09/1981 | EP0035425A1 Process for producing electromechanic transducers using at least one polymer film, and apparatus for carrying out this process |
| 09/08/1981 | US4288284 Method of producing housing element for quartz crystal oscillator |
| 09/08/1981 | CA1108746A1 Acoustic wave devices employing surface skimming bulk waves |
| 09/01/1981 | US4287447 Crystal holder for different sizes of crystal |
| 08/26/1981 | EP0034342A1 Piezoelectric oxide material |
| 08/19/1981 | EP0034077A2 Composite sheets containing electromechanical transducers, and transducers comprising such sheets |
| 08/18/1981 | US4284921 Polymeric piezoelectric transducer with thermoformed protuberances |
| 08/11/1981 | CA1106982A1 Polarization of a multi-ply stack of piezoelectric- forming resin pellicles |
| 08/06/1981 | WO1981002223A1 Pressure sensitive piezoelectric polymer signal generator |
| 08/05/1981 | EP0032911A1 Improvements in sensitive door edges |
| 08/04/1981 | US4282454 Piezoelectric crystal mounting and connection arrangement |
| 07/29/1981 | EP0032834A1 A positionable element driving circuit |
| 07/14/1981 | US4278000 Piezoelectric transducer for electrical string instruments and pickup means comprising the same |
| 07/14/1981 | CA1105153A1 Stabilization of piezoelectric resin elements |
| 06/11/1981 | WO1981001567A1 Vinylidene fluoride polymers |
| 05/19/1981 | US4268653 Process for preparation of a polymeric piezo-electric material and material prepared by said process |
| 05/12/1981 | US4267478 Pathlength controller for a ring laser gyroscope |
| 05/05/1981 | US4266156 Subminiature piezoelectric quartz vibrator |
| 05/05/1981 | US4265841 Method for production of composite piezoelectric material |
| 04/29/1981 | EP0027674A1 Process for producing a disc resonator with a single crystal of magnetic garnet material |
| 04/29/1981 | EP0027517A1 Scanning apparatus for surface analysis using vacuum-tunnel effect at cryogenic temperatures |
| 04/28/1981 | US4264882 Electric signal transmission device employing a ferromagnetic amorphous ribbon |
| 04/28/1981 | CA1100192A1 Dielectric refrigerator using orientable defect dipoles |
| 04/21/1981 | US4263527 Charge control of piezoelectric actuators to reduce hysteresis effects |
| 04/14/1981 | US4262227 Thickness-shear piezo-electric vibrator with additional mass for mode suppression |
| 04/14/1981 | US4261287 Method for manufacturing sensitive elements having a permanent electric polarization and device for performing the same |
| 04/08/1981 | EP0026698A1 Pressure transducer |
| 03/31/1981 | US4259605 Circuit for controlling a piezo-electric positioning element |
| 03/31/1981 | CA1098303A1 Method of producing a dielectric with perowskite structure |
| 03/25/1981 | EP0025751A1 Piezo-electric film of composite material and method of manufacturing it |
| 03/25/1981 | EP0025523A2 Piezoelectric transducers |
| 03/24/1981 | US4258282 Device for the generation of a control voltage across a piezo-electric positioning element |
| 03/24/1981 | US4257686 Multiple layer piezoelectric wavefront modulator |
| 03/24/1981 | US4257685 Acousto-optic device |
| 03/18/1981 | EP0025376A1 Piezo-electric transducer of polymeric material, and method of producing it |
| 03/11/1981 | EP0025005A1 Device for delivering and dosing very small quantities of liquid |
| 03/10/1981 | US4255272 Roasting a mixture of oxides of lead, tin, antimony, titanium, and zirconium, swaping, sintering and firing to obtain first a pyrochlore then a perovskite; high density; stoichiometry |
| 03/03/1981 | CA1096967A1 Positionable transducer mounting structure and driving system therefor |
| 02/17/1981 | US4251838 Auto-tracking control system for use in apparatus for reproducing a video signal recorded in successive parallel tracks on a recording medium |
| 02/05/1981 | WO1981000275A1 Improvements in sensitive door edges |
| 02/03/1981 | US4249100 Drive means and force control for piezoelectric vibration motor |
| 02/03/1981 | US4248727 Dielectric ceramics |
| 02/03/1981 | US4248386 Electrostatic deposition apparatus |
| 01/27/1981 | US4247352 Method of bonding crystal layers to insulating substrates |
| 01/13/1981 | US4245224 Drive circuit for ink jet discharging head |
| 01/13/1981 | US4244830 Method of producing a dielectric with perowskite structure and containing a copper oxide |
| 01/13/1981 | US4244722 Method for manufacturing thin and flexible ribbon of dielectric material having high dielectric constant |
| 01/13/1981 | CA1093677A1 Method of modifying the temperature drift of the propagation time of surface elastic waves and a device obtained by said method |
| 01/07/1981 | EP0021879A1 Pressure sensitive device using a polymeric piezoelectric body and method of manufacture |
| 01/06/1981 | US4243541 Lead, titanium, neodymium, indium and manganese oxides |
| 12/30/1980 | US4242213 Dielectric ceramic compositions based on magnesium, calcium and rare earth metal titanates |
| 12/23/1980 | US4241128 Polyvinylidene fluoride |
| 12/16/1980 | US4240141 Vibration motor |
| 12/16/1980 | US4239608 Method for producing piezoelectric polymeric material |
| 12/02/1980 | US4237399 Driving circuit for piezo-electric multimorph transducer |
| 12/02/1980 | CA1090915A1 Surface acoustic wave apparatus |
| 11/26/1980 | EP0019337A1 Piezoelectric body for an electromechanical transducer |
| 11/26/1980 | EP0019267A1 Piezoelectric vibration transducer |
| 11/25/1980 | US4236230 Bistable magnetostrictive device |
| 11/18/1980 | US4234813 Piezoelectric or pyroelectric polymer input element for use as a transducer in keyboards |
| 11/18/1980 | US4234811 Supporting structure for a thickness-shear type crystal oscillator for watches |
| 11/18/1980 | US4234436 With an oxide of lead or cadmium |
| 11/12/1980 | EP0018802A1 Process for preparing a piezoelectric pyroelectric film, and capacitors, piezoelectric and pyroelectric devices incorporating the film |
| 11/11/1980 | US4233637 Rotating magnetic head piezo-electric assembly and drive circuitry for video tape recorder |
| 11/11/1980 | US4233477 Flexible, shapeable, composite acoustic transducer |
| 11/11/1980 | US4233135 Method of fabricating piezoelectric thin film |
| 11/04/1980 | US4232240 High piezoelectric coupling X-cuts of lead potassium niobate, Pb2 Knb5 O15 , for surface acoustic wave applications |
| 10/29/1980 | EP0017921A1 Piezoelectric-drive system, especially for focussing systems |
| 10/28/1980 | US4230589 Method for producing piezoelectric ceramics |
| 10/28/1980 | US4229979 Transducer and method of making the same |
| 10/21/1980 | US4229506 Piezoelectric crystalline film of zinc oxide and method for making same |
| 10/21/1980 | CA1088219A1 Piezoelectric substrate fabrication process |
| 10/15/1980 | EP0016858A1 Piezoelectric transducer for mounting in pressure, force or acceleration sensing devices |
| 10/14/1980 | CA1087725A1 Piezoelectric acoustic emission instrumentation |
| 10/07/1980 | US4227111 Flexible piezoelectric composite transducers |
| 10/07/1980 | US4226827 Lead oxide, titanium oxide, manganese oxide |
| 09/30/1980 | US4224725 Method for manufacturing an acoustic surface wave interaction device |
| 09/23/1980 | US4224549 Lead potassium niobate substrate member for surface acoustic wave applications |
| 09/23/1980 | US4224548 Singly rotated cut of Y-axis boule lead potassium niobate, Pb2 KNb.sub. O15, for surface acoustic wave applications |
| 09/23/1980 | US4224174 Piezoelectric oxide materials |
| 09/23/1980 | US4223998 Piezo-electric actuating element for recording heads |
| 09/16/1980 | US4222885 Method of producing a dielectric with perowskite structure and containing a copper oxide |
| 09/03/1980 | EP0014744A1 Method of making a piezoelectric transducer |
| 09/02/1980 | US4220887 Prestressed, split cylindrical electromechanical transducer |
| 09/02/1980 | US4220546 Piezoelectric ceramic compounds |
| 08/26/1980 | US4219755 Electromotive actuator |
| 08/26/1980 | US4219608 Piezoelectric crystalline film of zinc oxide and method for making same |
| 08/26/1980 | CA1084336A1 Piezoelectric wire matrix printer head |
| 08/20/1980 | EP0014647A1 Two-dimensional acousto-electric device for the storing and processing of information |
| 08/19/1980 | US4218245 Nickel-base alloy |
| 08/19/1980 | CA1083802A1 Coating compositions, processes for depositing the same, and articles resulting therefrom |
| 08/06/1980 | EP0014043A1 Piezo-electric film manufacture and transducer |