| 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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| 08/16/1990 | EP0381685A1 Piezoelectric polymer laminates for torsional and bending modal control |
| 08/15/1990 | CN1044700A Converting mechanism of micro-amplitude motion |
| 08/14/1990 | US4949316 Acoustic logging tool transducers |
| 08/14/1990 | US4948767 Perovskite solid solution of lead, magnesium, niobium, titanium, zirconium and barium or strontium oxides |
| 08/14/1990 | CA1272593A1 Piezoelectric-polymer composites with 0-3 connectivity for transducer applications |
| 08/14/1990 | CA1272592A1 Easily poled 0-3 piezoelectric composites for transducer applications |
| 08/09/1990 | DE3904269A1 Resilient push-fit system for magnetostrictive materials |
| 08/08/1990 | EP0380590A1 An electrostrictive ceramic material including a process for the preparation thereof and applications therefor. |
| 08/08/1990 | EP0342274B1 Arrangement for reducing the piezo effects in a semiconductor material that contains at least one piezo effect-sensitive electric device, and method of making the same |
| 08/07/1990 | US4947239 Swing-driven solid-state imaging device with elastic suspension mechanism for image sensor |
| 08/07/1990 | US4947077 Drive apparatus and motor unit using the same |
| 08/07/1990 | US4947076 Piezo electric motor |
| 08/07/1990 | US4947074 Piezoelectric element drive circuit |
| 08/07/1990 | US4946913 Piezoelectric copolymers of vinylidene fluoride and trifluoroethylene |
| 08/07/1990 | US4946710 Method for preparing PLZT, PZT and PLT sol-gels and fabricating ferroelectric thin films |
| 08/01/1990 | EP0379780A2 Driver circuit for piezoelectric actuator in a dot matrix printer |
| 07/31/1990 | US4945275 Ultrasonic driving device |
| 07/31/1990 | US4945235 Fine adjustment mechanism for a scanning tunneling microscope |
| 07/31/1990 | US4944891 Polymer matrix |
| 07/31/1990 | US4944580 Active segmented mirror including a plurality of piezoelectric drivers |
| 07/25/1990 | EP0379390A2 Piezoelectric element with giant electrostrictive effect and ceramic composition for preparing same |
| 07/25/1990 | EP0379182A2 Apparatus for driving piezoelectric element for closing and opening valve member |
| 07/25/1990 | EP0379075A1 Magnetic circuit |
| 07/24/1990 | US4943752 Piezoelectric incandescent lamp test device |
| 07/24/1990 | US4943004 Actuator for a fuel injector |
| 07/19/1990 | DE3935891A1 Laser gyro mirror positioner with two piezoelectrical devices - ensures purely axial movement under pressure from leaf spring with decoupling from radial tilt-provoking efforts |
| 07/19/1990 | DE3901317A1 Device for setting the axial preload of rolling contact bearings and spindle nuts |
| 07/12/1990 | WO1990007821A1 Method and device in a motor |
| 07/10/1990 | US4940914 Vibration absorbing apparatus |
| 07/10/1990 | US4940681 Ferroelectric ceramic material |
| 07/05/1990 | DE3934968A1 Piezo-drive for axial movement or for mirrors in laser gyroscope - has layers of piezoelectric material or of metal which are glued together at constant distance |
| 07/05/1990 | DE3933296A1 Mikroantriebsvorrichtung Micro drive device |
| 07/04/1990 | EP0376670A2 A high-dielectric constant ceramic composite and ceramic capacitor elements |
| 07/04/1990 | EP0376508A1 Process for producing submicron ceramic powders of perovskite compounds with controlled stoichiometry and particle size |
| 07/03/1990 | US4939407 Block patterning of the metallization of polyvinylidene fluoride transducers |
| 07/03/1990 | US4939405 Piezo-electric vibrator pump |
| 07/03/1990 | US4939404 Vibration wave motor |
| 07/03/1990 | US4939401 Method and system for activation of a piezoelectric bender switch |
| 07/03/1990 | US4939041 Metal film coatings on amorphous metallic alloys |
| 06/27/1990 | EP0375594A1 Preparation of thin films of ferroelectric materials |
| 06/27/1990 | EP0375570A2 Vibration absorption device comprising a piezoelectric element |
| 06/27/1990 | EP0375302A1 Magnetostrictive transducer |
| 06/27/1990 | EP0374378A2 Piezoelectric ceramic and manufacturing method thereof |
| 06/26/1990 | US4937489 Electrostrictive actuators |
| 06/26/1990 | US4937488 Vibration wave motor |
| 06/26/1990 | CA1270905A1 Mechanical quantity sensor element and method for making the same |
| 06/21/1990 | DE3922504A1 Axial piezoelectric actuator spring-biased by metallic bellows - incorporates stack of piezoelectric discs within welded bellows which forms whole or part of sealed housing |
| 06/20/1990 | EP0373605A1 Acoustic charge transport device having direct optical input |
| 06/20/1990 | CN1043225A Annular triple-lamina piezoelectric supersonic vibrator and its clamping supersonic micromotion motor |
| 06/19/1990 | US4935659 Ultrasonic motor |
| 06/19/1990 | US4934401 Nozzle flapper mechanism |
| 06/14/1990 | WO1990006292A1 Process for producing highly crystalline and homogeneous sub-micron doped and undoped piezoelectric ceramic powders with controlled stoichiometry and particle size |
| 06/14/1990 | WO1990006291A1 Process for producing sub-micron ceramic powders of perovskite compounds |
| 06/13/1990 | EP0372583A2 Method of forming thin film elements of an ultrasonic array transducer |
| 06/12/1990 | US4933592 Mirror transducer control circuit |
| 06/12/1990 | US4933591 Double saggital pull stroke amplifier |
| 06/12/1990 | US4933590 Ultrasonic motor |
| 06/12/1990 | US4933589 For use with a grain loss monitor |
| 06/12/1990 | US4933580 Magneto-strictive torque sensor |
| 06/12/1990 | US4933479 Crosslinked polyphosphazenes as piezoelectric materials |
| 06/12/1990 | US4933230 Piezoelectric composites |
| 06/12/1990 | US4932119 Method of making standard electrodisplacive transducers for deformable mirrors |
| 06/09/1990 | CA2004984A1 Process for producing sub-micron ceramic powders of perovskite compounds with controlled stoichiometry and particle size |
| 06/08/1990 | CA2005036A1 Process for producing highly crystalline and homogeneous sub-micron doped and undoped piezoelectric ceramic powders with controlled stoichiometry and particle size |
| 06/06/1990 | EP0371469A2 Apparatus for driving piezoelectric element for closing and opening valve member |
| 05/30/1990 | EP0370996A2 Piezoelectric crystal element based in GaPO4 |
| 05/30/1990 | EP0370508A2 Ultrasonic actuator |
| 05/30/1990 | EP0370395A2 Method of controlling the path of balls in an oscillating bearing |
| 05/29/1990 | US4929860 Electrode configuration for vibrating beam transducers |
| 05/29/1990 | US4929859 Piezoelectric actuator having parallel arrangement of a single piezoelectric element and a pair of displacement magnification arms |
| 05/23/1990 | EP0369331A2 Speed detector for a vibration wave driven motor |
| 05/23/1990 | EP0368986A1 Improvements in and relating to piezoelectric composites |
| 05/23/1990 | EP0122918B1 Acoustic charge transport device and method |
| 05/23/1990 | DE3838890A1 Piezoelectric line (cable, lead) |
| 05/22/1990 | US4928030 Piezoelectric actuator |
| 05/22/1990 | US4927084 Fuel injection valve |
| 05/21/1990 | CA2000669A1 Dynamic motor controller |
| 05/17/1990 | WO1990005202A1 A method for the production of thin film perovskite phase lead scandium tantalate |
| 05/17/1990 | WO1990005041A1 Method for effecting solder interconnects |
| 05/15/1990 | US4926085 Vibration wave motor |
| 05/15/1990 | US4926084 Driving apparatus for a vibration wave motor |
| 05/15/1990 | CA1269129A1 Piezoelectric switch |
| 05/14/1990 | EP0316365A4 Process for making polarized material and polarized products. |
| 05/10/1990 | DE3932451A1 Doppelkammelektrode fuer oberflaechenwellenvorrichtungen und herstellungsverfahren hierfuer Interdigital electrode for oberflaechenwellenvorrichtungen and manufacturing processes for here |
| 05/09/1990 | EP0366847A2 Graphics display using biomorphs |
| 05/09/1990 | EP0366782A1 Electrode configuration for vibrating beam transducers |
| 05/08/1990 | US4924131 Piezo-electric acceleration sensor |
| 05/02/1990 | EP0366605A1 Electrohydraulic or like pneumatic actuator |
| 05/02/1990 | EP0366597A2 Method of manufacturing saw devices and the thus obtained saw devices |
| 05/02/1990 | EP0366496A2 Ultra-sonic motor driving circuit |
| 05/01/1990 | US4922096 System for monitoring and controlling physical movement |
| 05/01/1990 | US4921928 Piezoelectric polymer materials from epoxy resins and polytetramethyleneoxide-di-p-aminobenzoate |
| 05/01/1990 | US4921415 Cure monitoring apparatus having high temperature ultrasonic transducers |
| 05/01/1990 | US4920660 Fine positioning device and displacement controller therefor |
| 05/01/1990 | US4920641 Method of manufacturing an electronic part |
| 04/25/1990 | EP0365393A1 Wide-band omnidirectional loudspeaker |
| 04/25/1990 | EP0365231A2 Progressive wave motor |
| 04/25/1990 | EP0364518A1 Shear mode transducer for ink jet systems. |
| 04/19/1990 | DE3834782A1 Supply circuit for a device which is to be supplied with two AC voltages of different frequencies having a predetermined phase relationship |
| 04/18/1990 | EP0364418A2 A linearily operating motor |