| Patents for H02N 2 - Electric machines in general using piezo-electric effect, electrostriction or magnetostriction (14,251) |
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| 02/20/1991 | EP0413111A1 Ultrasonic progressive wave motor with two or more steps |
| 02/19/1991 | US4994698 Vibratory linear motor system |
| 02/06/1991 | EP0411508A2 Method and device for driving a supersonic motor |
| 02/05/1991 | US4990835 Automotive motor-driven device controlling and driving system |
| 01/29/1991 | US4989030 Program shutter drive system |
| 01/29/1991 | US4988908 Piezoelectric transducers for a ring laser gyroscope dither motor |
| 01/22/1991 | US4987334 Piezoelectric dither motor |
| 01/16/1991 | EP0408305A2 Piezoelectric/electrostrictive actuator |
| 01/16/1991 | EP0407460A1 An integrated mass storage device. |
| 01/09/1991 | EP0406843A2 Vibration driven motor and system |
| 01/09/1991 | EP0406807A2 Sheet feeding device |
| 01/08/1991 | US4983876 Diaphragm |
| 01/08/1991 | US4983874 Vibrator and ultrasonic motor employing the same |
| 01/08/1991 | US4982756 Transporting oil though a pipeline |
| 01/08/1991 | CA1278810C Piezoelectric motor |
| 01/02/1991 | EP0405854A2 Ultrasonic motor |
| 01/02/1991 | EP0404799A1 Integrated scanning tunneling microscope. |
| 12/27/1990 | EP0404511A2 Ultrasonic motor |
| 12/27/1990 | EP0404082A2 Piezoelectric bending transducer and its usage |
| 12/27/1990 | EP0404023A2 Control apparatus for vibration driven motor |
| 12/25/1990 | US4980599 Ultrasonic motor |
| 12/25/1990 | US4980597 Ultrasonic motor with vibration suppressor |
| 12/19/1990 | EP0403298A2 Driving device for ultrasonic wave motor |
| 12/18/1990 | US4978882 Vibration wave driven motor |
| 12/12/1990 | EP0401762A2 Vibration driven motor |
| 12/04/1990 | US4975614 Ultrasonic driving device |
| 11/27/1990 | US4973876 Ultrasonic power supply |
| 11/22/1990 | EP0397799A1 A piezoelectric motion transducer and an integrated scanning tunneling microscope using the same. |
| 11/20/1990 | CA1276684C Personal safety radio device |
| 11/14/1990 | EP0397116A2 Information detecting apparatus |
| 11/13/1990 | US4969726 Ring laser gyro path-length-control mechanism |
| 10/31/1990 | EP0395298A2 Standing-wave type ultrasonic motor |
| 10/31/1990 | EP0394582A2 Magnetostrictive actuator using adaptive control. |
| 10/23/1990 | US4965482 Ultrasonic motor and method of adjusting the same |
| 10/23/1990 | US4965481 Drive circuit for vibratory-wave motor |
| 10/16/1990 | USRE33390 Motor device utilizing ultrasonic oscillation |
| 10/16/1990 | US4963916 Photographic camera |
| 09/25/1990 | US4959580 Piezoelectric motor |
| 09/25/1990 | US4959579 Ultrasonic motor |
| 09/18/1990 | US4958101 Piezoelectric actuator |
| 09/07/1990 | WO1990003665A3 Integrated micromechanical piezoelectric motor |
| 09/05/1990 | EP0385409A2 Sheet feeding device |
| 09/04/1990 | US4954742 Vibratory-wave motor device |
| 09/04/1990 | US4954741 Control circuit for a vibration wave motor |
| 09/04/1990 | US4953413 Driving device having a vibrator |
| 08/30/1990 | DE3905889A1 Device for generating the energy pulses required for operating a light-emitting component |
| 08/28/1990 | US4952836 Piezoelectrostatic generator |
| 08/28/1990 | US4952834 Circuitry for driving ultrasonic motor |
| 08/22/1990 | EP0383309A2 Vibration wave motor |
| 08/22/1990 | EP0157764B1 Power generation from waves on the surface of bodies of water |
| 08/21/1990 | US4950135 Piezoelectric powered scroll compressor |
| 08/16/1990 | EP0382563A2 Ultrasonic motor having high drive effeciency |
| 08/16/1990 | EP0382253A2 Sheet Feeder |
| 08/15/1990 | CN1044700A Converting mechanism of micro-amplitude motion |
| 08/07/1990 | US4947076 Piezo electric motor |
| 07/31/1990 | US4945294 Electronic damping circuit |
| 07/31/1990 | US4945275 Ultrasonic driving device |
| 07/26/1990 | WO1990008283A1 Control valve for a faucet and use of ultrasonic motor |
| 07/24/1990 | US4943752 Piezoelectric incandescent lamp test device |
| 07/24/1990 | US4943004 Actuator for a fuel injector |
| 07/05/1990 | DE3933296A1 Mikroantriebsvorrichtung Micro drive device |
| 07/03/1990 | US4939404 Vibration wave motor |
| 06/26/1990 | US4937488 Vibration wave motor |
| 06/26/1990 | US4936307 Ultrasonic observation system and an ultrasonic endoscope system |
| 06/20/1990 | CN1043225A Annular triple-lamina piezoelectric supersonic vibrator and its clamping supersonic micromotion motor |
| 06/19/1990 | US4935659 Ultrasonic motor |
| 06/12/1990 | US4933590 Ultrasonic motor |
| 05/30/1990 | EP0370395A2 Method of controlling the path of balls in an oscillating bearing |
| 05/23/1990 | EP0369331A2 Speed detector for a vibration wave driven motor |
| 05/22/1990 | US4928030 Piezoelectric actuator |
| 05/21/1990 | CA2000669A1 Dynamic motor controller |
| 05/17/1990 | DE3838089A1 Device for supplying power to a laser for hit simulation |
| 05/16/1990 | EP0368579A2 Probe unit, driving method thereof, and scanning device for detecting tunnel current having said probe unit |
| 05/15/1990 | US4926085 Vibration wave motor |
| 05/15/1990 | US4926084 Driving apparatus for a vibration wave motor |
| 05/02/1990 | EP0366496A2 Ultra-sonic motor driving circuit |
| 05/02/1990 | CN1041851A 压电电动机 Piezoelectric motor |
| 05/01/1990 | US4922096 System for monitoring and controlling physical movement |
| 04/25/1990 | EP0365393A1 Wide-band omnidirectional loudspeaker |
| 04/25/1990 | EP0365231A2 Progressive wave motor |
| 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 | CN1041492A Shear motor for dynamic mount for laser-beam steering mirror |
| 04/18/1990 | CN1041482A 压电致动器 The piezoelectric actuator |
| 04/17/1990 | US4918351 Vibration wave motor |
| 04/12/1990 | DE3833158A1 Bistable bending (flexural) transducer |
| 04/12/1990 | DE3833157A1 Monostable piezoelectric position encoder (displacement sensor) |
| 04/05/1990 | WO1990003665A2 Integrated micromechanical piezoelectric motor |
| 04/05/1990 | DE3833342A1 Piezoelectric motor |
| 04/05/1990 | DE3833109A1 Piezoelectric control element |
| 04/04/1990 | EP0360975A2 Piezoelectric actuator |
| 04/03/1990 | US4914338 Irradiated aluminite protective coating |
| 04/03/1990 | US4914337 Power supply frequency regulating device for vibration wave driven motor |
| 04/03/1990 | US4914336 Wave motor driving circuit |
| 04/03/1990 | US4912822 Method of making an integrated scanning tunneling microscope |
| 03/28/1990 | EP0360199A2 Vibration wave driven actuator |
| 03/28/1990 | EP0359875A1 Ultrasonic driving devices |
| 03/27/1990 | US4912351 Piezoelectric motor |
| 03/07/1990 | EP0356591A1 Ultrasonic driving devices |
| 03/06/1990 | US4906840 Integrated scanning tunneling microscope |
| 02/21/1990 | CN1039939A Magnetic energy piezo-electric generator |