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Class Information
Number: 310/357
Name: Electrical generator or motor structure > Non-dynamoelectric > Piezoelectric elements and devices > Orientation of piezoelectric polarization
Description: Piezoelectric noncrystalline materials and elements in which the direction of polarization is significant with respect to the piezoelectric property of the material and/or in adopting the element to its intended function.










Sub-classes under this class:

Class Number Class Name Patents
310/358 Ceramic composition (e.g., barium titanate) 596


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
4755707 Input device Jul. 5, 1988
4749900 Multi-layer acoustic transducer for high frequency ultrasound Jun. 7, 1988
4734611 Ultrasonic sensor Mar. 29, 1988
4728845 1-3-0 Connectivity piezoelectric composite with void Mar. 1, 1988
4725754 Method of making a low aging piezoelectric resonator Feb. 16, 1988
4697116 Piezoelectric vibrator Sep. 29, 1987
4688306 Method of preparing a piezoelectric device Aug. 25, 1987
4684337 Device for polarizing ferroelectric materials Aug. 4, 1987
4683396 Composite ultrasonic transducers and methods for making same Jul. 28, 1987
4658176 Ultrasonic transducer using piezoelectric composite Apr. 14, 1987
4649312 Reinforced piezoelectric transducer and pressure sensor using such a transducer Mar. 10, 1987
4629925 Piezoelectric coaxial cable Dec. 16, 1986
4628285 3-terminal oscillating element and oscillator employing the same Dec. 9, 1986
4609845 Stretched piezoelectric polymer coaxial cable Sep. 2, 1986
4608509 Length polarized, end electroded piezoelectric resonator Aug. 26, 1986
4595515 Vibration-isolating article Jun. 17, 1986
4572981 Transducer comprising composite electrical materials Feb. 25, 1986
4565943 Process for preparing polymeric piezoelectric material Jan. 21, 1986
4543293 Polarized, shaped material of copolymer of vinylidene fluoride Sep. 24, 1985
4518889 Piezoelectric apodized ultrasound transducers May. 21, 1985
4509153 Resolution transducers, systems and methods for the transmission and/or reception of waves propagated by vibration Apr. 2, 1985
4456394 Piezoelectric printer and asymmetric piezoelectric actuator used therein Jun. 26, 1984
4412148 PZT Composite and a fabrication method thereof Oct. 25, 1983
4407054 Method of making electromechanical transducers using improved flexible composite piezoelectric material Oct. 4, 1983
4403382 Process for manufacturing electromechanical transducers using at least one polymer film Sep. 13, 1983
4395719 Ink jet apparatus with a flexible piezoelectric member and method of operating same Jul. 26, 1983
4378721 Pickup apparatus for an electric string type instrument Apr. 5, 1983
4375042 Temperature gradient method of nonuniformly poling a body of polymeric piezoelectric material and novel flexure elements produced thereby Feb. 22, 1983
4356424 Pseudo-AC method of nonuniformly poling a body of polymeric piezoelectric material and flexure elements produced thereby Oct. 26, 1982
4345359 Process for manufacturing a piezoelectric transducer made from a polymer material Aug. 24, 1982
4340786 Piezo-electric film manufacture Jul. 20, 1982
4336510 Oscillator with a feedback circuit employing a pre-polarized ceramic piezoelectric oscillating unit Jun. 22, 1982
4281298 Flexural transducer Jul. 28, 1981
4238725 Apparatus for checking the direction of polarization of shear-wave ultrasonic transducers Dec. 9, 1980
4229718 Wide-bandwidth monolithic crystal filter Oct. 21, 1980
4204135 Piezoelectric elements of organic high molecular weight materials May. 20, 1980
4194194 Piezoelectric vibration detector for sensing a nearby intruder Mar. 18, 1980
4189516 Epitaxial crystalline aluminium nitride Feb. 19, 1980
4160881 Electret transducers: acoustically transparent backplate of sintered conductive spheres and a thin electret coating; meshlike diaphragm spacing screen overlays apertured electret backplate wit Jul. 10, 1979
4088917 Method and apparatus for the permanent polarization of piezoelectric bodies May. 9, 1978
4067019 Impact position transducer for ink jet Jan. 3, 1978
4056742 Transducer having piezoelectric film arranged with alternating curvatures Nov. 1, 1977
4046456 Electro-optic cell with transverse electric field Sep. 6, 1977
4028566 Electroacoustic conversion device having a diaphragm comprising at least one of a piezoelectric polymer material Jun. 7, 1977
4016437 Piezoelectric pressure and force transducers or accelerometers Apr. 5, 1977
4016440 Particularly oriented plate-like monocrystalline piezoelectric body and acoustic surface wave filter device employing same Apr. 5, 1977
3988620 Transducer having enhanced acceleration cancellation characteristics Oct. 26, 1976
3986669 Ultrasonic tubular emulsifier and atomizer apparatus and method Oct. 19, 1976
3982144 Directional low-frequency ring hydrophone Sep. 21, 1976
3956646 Lithium niobate piezoelectric substrate for use in an elastic surface wave device May. 11, 1976

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