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Class Information
Number: 310/311
Name: Electrical generator or motor structure > Non-dynamoelectric > Piezoelectric elements and devices
Description: Subject matter which includes a shaped body of a material which exhibits an electrostatic polarization when subjected to mechanical stress or which exhibits a mechanical stress tending to produce deflection, expansion, or contraction when subjected to electrical stress, the body being so shaped relative to the electromechanical properties of the material as to render the body useful for the conversion of energy between the electrical and mechanical states, and combinations of such bodies with means which utilize or which contribute to the utilization of such bodies for the conversion of energy between the electrical and mechanical states.










Sub-classes under this class:

Class Number Class Name Patents
310/312 Adding or subtracting mass 310
310/326 Combined with damping structure 301
310/321 Combined with resonant structure 480
310/314 Electrical systems 81
310/365 Electrode arrangement 615
310/363 Electrode materials 335
310/340 Encapsulated or coated 354
310/357 Orientation of piezoelectric polarization 201
310/367 Piezoelectric element shape 399
310/320 Piezoelectric slab having different resonant frequencies at different areas 391
310/360 Rotation of crystal axis (e.g., cut angle) 153
310/345 Supported by elastic material 154
310/313R Surface acoustic wave devices 1,206
310/328 With mechanical energy coupling means 2,128
310/348 With mounting or support means 933
310/346 With temperature compensating structure 305
310/341 With temperature modifier and/or gas or vapor atmosphere control 56


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Patent Number Title Of Patent Date Issued
8709791 Detection of bioagents using a shear horizontal surface acoustic wave biosensor Apr. 29, 2014
8710761 Circuit arrangement for a piezo transformer, and method therefor Apr. 29, 2014
8704429 Bismuth iron oxide powder, manufacturing method for the bismuth iron oxide powder, dielectric ceramics, piezoelectric element, liquid discharge head, and ultrasonic motor Apr. 22, 2014
8704647 Haptic feedback case for electronic equipment Apr. 22, 2014
8690298 Liquid-ejecting head, liquid-ejecting apparatus, and piezoelectric element and piezoelectric material Apr. 8, 2014
8690297 Sol-gel liquid, electromechanical conversion element, liquid discharge head and inkjet recorder Apr. 8, 2014
8678560 Liquid-ejecting head, liquid-ejecting apparatus, piezoelectric element, and piezoelectric material Mar. 25, 2014
8678562 Piezoelectric material, piezoelectric device, liquid discharge head, and ultrasonic motor Mar. 25, 2014
8680741 Haptic actuator using cellulose electro-active paper film Mar. 25, 2014
8674585 Electromechanical motor especially a piezoelectric microstepper motor Mar. 18, 2014
8673121 Method of fabricating piezoelectric materials with opposite C-axis orientations Mar. 18, 2014
8668310 Liquid-ejecting head, liquid-ejecting apparatus, piezoelectric element, and piezoelectric material Mar. 11, 2014
8664831 Electromechanical motor, especially a piezoelectric microstepper drive Mar. 4, 2014
8657417 Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus Feb. 25, 2014
8651629 Piezoelectric element, liquid-ejecting head, and liquid-ejecting apparatus Feb. 18, 2014
8654614 Capacitive electromechanical transducer Feb. 18, 2014
8641174 Liquid ejection head, liquid ejection device Feb. 4, 2014
8643253 Piezoelectric ultracapacitors Feb. 4, 2014
8636032 Acoustical fluid control mechanism Jan. 28, 2014
8636953 Surface acoustic wave sensing device Jan. 28, 2014
8632168 Piezoelectric element, liquid ejecting head, liquid ejecting apparatus, and methods for the manufacture thereof Jan. 21, 2014
8628174 Piezoelectric element, method of manufacturing the same, and ink jet head Jan. 14, 2014
8623451 Large-scale lateral nanowire arrays nanogenerators Jan. 7, 2014
8616682 Liquid ejection head Dec. 31, 2013
8617078 Ultrasonic transducer and ultrasonic diagnostic device using same Dec. 31, 2013
8608297 Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus Dec. 17, 2013
8608295 Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus Dec. 17, 2013
8608289 Liquid ejecting head, liquid ejecting apparatus, and piezoelectric element Dec. 17, 2013
8604664 Electrochemical actuator Dec. 10, 2013
8605383 Methods, devices and systems for characterizing polarities of piezoelectric (PZT) elements of a two PZT element microactuator Dec. 10, 2013
8595923 Method of determining a flexoelectric effect in a liquid crystal material Dec. 3, 2013
8596765 Liquid ejecting head, liquid ejecting apparatus, and piezoelectric element Dec. 3, 2013
8593032 Frame-shaped MEMS piezoresistive resonator Nov. 26, 2013
8591009 Piezoelectric film, ink jet head, angular velocity sensor and piezoelectric generating element Nov. 26, 2013
8581469 Device for converting thermal energy into electrical energy Nov. 12, 2013
8573517 Injector Nov. 5, 2013
8574159 Thermally enhanced ultrasonic probe Nov. 5, 2013
8567927 Piezoelectric device, liquid-ejecting head, and liquid-ejecting apparatus Oct. 29, 2013
8569925 Low energy or minimum disturbance method for measuring frequency response functions of ultrasonic surgical devices in determining optimum operating point Oct. 29, 2013
8562113 Piezoelectric thin film, ink jet head, method of forming image by the ink jet head, angular velocity sensor, method of measuring angular velocity by the angular velocity sensor, piezoelectric Oct. 22, 2013
8564226 Method and system for ultrasound excitation of structures with various arbitrary geometry Oct. 22, 2013
8559660 Electrostatic electroacoustic transducers Oct. 15, 2013
8558498 Drive device Oct. 15, 2013
8551003 Ultrasonic probe and ultrasonic diagnosis device Oct. 8, 2013
8545732 Electrode film for polymer actuator element, and polymer actuator element comprising the same Oct. 1, 2013
8536767 Electrostrictive composite and electrostrictive element using the same Sep. 17, 2013
8531083 Devices having a tunable acoustic path length and methods for making same Sep. 10, 2013
8531082 Actuator and method for using the same Sep. 10, 2013
8529024 Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus Sep. 10, 2013
8524109 High curie temperature ternary piezoelectric ceramics Sep. 3, 2013

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18










 
 
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