Patents
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)
08/1993
08/03/1993US5233258 Ultrasonic sheet feeder, low-profile ultrasonic motor, and method of driving the same
08/03/1993US5233257 Piezo-electric motor
08/03/1993US5233256 Method of driving piezoelectric bimorph device and piezoelectric bimorph device
08/03/1993US5231887 Device in a force actuator
07/1993
07/28/1993EP0552754A1 A vibration driven motor
07/28/1993EP0552346A1 Electroactoric motor.
07/27/1993US5231325 Vibration device for a vibration driven motor
07/27/1993US5230921 Flexible piezo-electric membrane
07/22/1993DE3844821C2 Micromanipulator for raster tunnel microscope
07/21/1993EP0551328A1 Piezoelectric component-mounting foil and foil-making method
07/20/1993US5229680 Piezoelectric transformer using single crystal of linbo3
07/20/1993US5229679 Microdrive apparatus
07/20/1993US5229678 Drive control unit for an ultrasonic step motor
07/14/1993EP0551096A1 Control device for a vibration driven motor
07/14/1993EP0550829A1 Method of making monolithic multilayer stacks for ferroelectric ceramic actuators
07/14/1993EP0550684A1 Acoustic transmitter.
07/14/1993EP0550552A1 Composite multilayer ceramic structure
07/14/1993EP0550437A1 Process for making piezoelectric stacks
07/14/1993EP0550435A1 Piezoelectric solid state motor stack.
07/07/1993EP0550410A2 Apparatus for shielding sensitive electronic circuits and providing power thereto
07/07/1993EP0550193A1 Method for ejecting ink droplets in an acoustic ink printer and a piezoelectric transducer for an ink printer
07/06/1993US5225941 Driving device
07/06/1993US5225734 Vibration wave driven motor
07/06/1993US5225731 Solid body piezoelectric bender transducer
07/06/1993CA2007952C Piezoelectric element with giant electrostrictive effect and ceramic composition for preparing same
06/1993
06/29/1993US5223763 Wind power generator and velocimeter
06/29/1993US5223713 Scanner for scanning tunneling microscope
06/29/1993US5223046 Containing iron, manganese and certain rare earth elements
06/24/1993WO1993012547A1 Magnetostrictive material
06/24/1993WO1993012538A1 Process for fabricating layered superlattice materials
06/24/1993DE4242555A1 Compsn. for preparing film
06/23/1993EP0547580A1 Walking expansion actuator
06/22/1993US5221872 Piezoelectric ceramics and their production methods
06/17/1993DE4140676A1 Piezo-actuator stack control method - is formed on N single piezo discs, only one of which is charged with electrical energy at one time
06/17/1993CA2070711A1 Walking expansion actuator
06/16/1993EP0546696A1 Process for lithography on piezoelectric films
06/10/1993WO1993011413A1 Piezoelectric bimorph cantilevers for surface analysis instruments
06/09/1993EP0545391A1 Actuator composed of ferroelectric ceramic discs
06/08/1993US5218575 Acoustic transducer
06/08/1993US5218259 Coating surrounding a piezoelectric solid state motor stack
06/08/1993US5218258 Ultrasonic motor and laser beam welding apparatus using the same
06/08/1993CA1318964C Piezo-electric laminate and method of manufacture
06/02/1993EP0544405A1 Piezoelectric fluid flow control valve
06/01/1993US5216316 Piezo electric transducer
06/01/1993US5216314 Pressure force adjusting mechanism for a vibration wave driven motor
06/01/1993US5216313 Ultrasonic wave linear motor
06/01/1993CA1318725C Piezoelectric sensor
05/1993
05/26/1993EP0543360A1 Vibration driven motor
05/26/1993EP0543114A1 Multiresonant actuator
05/26/1993EP0448604A4 Process for producing highly crystalline and homogeneous sub-micron doped and undoped piezoelectric ceramic powders with controlled stoichiometry and particle size
05/25/1993US5214342 Two-dimensional walker assembly for a scanning tunneling microscope
05/25/1993US5214341 Piezoelectric acutator device with vibration absorbing means
05/25/1993US5214340 Driver circuit for piezoelectric element, having voltage limiter capable of charging the element with energy from coil after charging switch is off
05/25/1993US5214339 Circuit and method of driving an ultrasonic motor to method for driving an ultrasonic motor
05/25/1993US5213424 Piezoelectric actuator device
05/19/1993CN1072288A Piezoelectric actuator
05/11/1993US5210455 Piezoelectric/electrostrictive actuator having ceramic substrate having recess defining thin-walled portion
05/11/1993US5210454 Driving circuit for an ultrasonic motor
05/11/1993US5209119 Microdevice for sensing a force
05/11/1993CA1317478C Multisensor piezoelectric elements and a method for making the same
05/05/1993EP0539969A1 Ultrasonic motor
05/05/1993EP0539950A1 Sheet feeding apparatus
05/04/1993US5208506 Laminated piezoelectric actuator
05/04/1993US5208505 Device for driving a piezoelectric element
04/1993
04/29/1993WO1993008607A1 Process and device for regulating the frequency of a travelling wave motor
04/29/1993DE4233933A1 Ultrasonic motor of travelling wave type - has piezoelectric transducer of cylindrical platelets, adhered to stator surface
04/29/1993DE4134781A1 Verfahren zur regelung der frequenz eines wanderwellenmotors und regeleinrichtung hierzu Method for control of the frequency of a traveling wave motors and control device for this purpose
04/28/1993EP0539151A1 Dielectric ceramics composite material
04/28/1993EP0538791A1 Vibration driven motor
04/27/1993US5205147 Pre-loaded actuator using piezoelectric element
04/27/1993US5205145 Method of producing torque sensor shafts
04/27/1993CA1316714C Torque detecting apparatus
04/21/1993EP0537446A2 Piezoelectric motor
04/21/1993EP0537384A1 Rotation control system for ultrasonic motor
04/21/1993EP0537150A1 Improvements in or relating to electrically controlled fluid valves
04/21/1993EP0239637B1 Crystalline vinylidene fluoride
04/20/1993US5204577 Ultrasonic motor improved in driving efficiency
04/20/1993US5204576 Device for driving a piezoelectric element
04/20/1993US5204013 Free of mechanically induced molecular orientation, stable to melting or softening point
04/20/1993US5203537 Piezoceramic valve actuator sandwich assembly and valve incorporating such an assembly
04/20/1993CA2027922C Ferroelectric ceramics
04/19/1993WO1993008609A1 Piezoelectric and electrostrictive actuators
04/19/1993WO1993008608A1 Piezoelectric actuator
04/14/1993EP0536832A1 Rotary or linear electric motor in which the actuator is driven by ultrasonic vibrations
04/14/1993EP0536637A2 Piezo-electric device type actuator
04/14/1993EP0536409A1 Ultrasonic motor
04/13/1993US5202600 Piezoelectric device and related converting devices
04/07/1993EP0535641A2 Magnetic actuator
04/07/1993EP0535510A1 Electromechanical transducer
04/06/1993US5200665 Ultrasonic actuator
04/06/1993US5200617 PMN translator and linearization system in scanning probe microscope
04/06/1993US5199701 Carrier apparatus using ultrasonic actuator
04/01/1993WO1993006625A1 Hydraulic displacement transformer for the piezoelectric actuator of an inlet valve
04/01/1993DE4232225A1 Displacement amplifier for piezoelectric element, e.g. for vibration damper of actuator - has displacement transfer part, carrier, and chamber sealed by two elastic elements, with larger chamber volume change caused by displacement of second elastic sealing element
03/1993
03/31/1993EP0534532A1 Axle detector built in the surface of a multi-lane road
03/31/1993EP0534389A2 Piezoelectric vibrator capable of reliably preventing dielectric breakdown and a method of manufacturing the same
03/31/1993EP0534222A2 Piezoelectric beam deflector
03/31/1993CA2074713A1 Magnetic actuator
03/30/1993US5198732 Rotation control system for ultrasonic motor
03/30/1993US5198716 Micro-machined resonator