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Class Information
Number: 331/154
Name: Oscillators > Electromechanical resonator
Description: Oscillators wherein the frequency of the oscillator is determined by the mechanical period of vibration or oscillation of an electrically driven material body, the material body constituting a mechanical resonator.










Sub-classes under this class:

Class Number Class Name Patents
331/158 Crystal 994
331/157 Magnetostrictive 8
331/156 Vibrating reed or string type (e.g., tuning fork) 132
331/155 With optical, piezoelectric or acoustic coupling means 54


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8692624 Tuning of MEMS oscillator Apr. 8, 2014
8683862 Oscillation apparatus with atomic-layer proximity switch Apr. 1, 2014
8686802 Bias voltage tuning of MEMS resonator operation point Apr. 1, 2014
8680931 Periodic signal generators having microelectromechanical resonators therein that support surface wave and bulk acoustic wave modes of operation with different temperature coefficients of frequ Mar. 25, 2014
8674775 Out-of-plane resonator Mar. 18, 2014
8669822 Resonator Mar. 11, 2014
8669824 Oscillator having a plurality of switchable MEMS vibrators Mar. 11, 2014
8669823 Ovenized microelectromechanical system (MEMS) resonator Mar. 11, 2014
8669821 Piezoelectric oscillator Mar. 11, 2014
8665031 System and method for improved start-up of self-oscillating electro-mechanical surgical devices Mar. 4, 2014
8648663 Oscillator having a plurality of switchable MEMS vibrators Feb. 11, 2014
8638179 Micromechanical resonating devices and related methods Jan. 28, 2014
8638178 Methods of testing packaged thin-film piezoelectric-on-semiconductor microelectromechanical resonators having hermetic seals Jan. 28, 2014
8629731 MEMS resonator Jan. 14, 2014
8624686 Micromechanical component and method for oscillation excitation of an oscillation element of a micromechanical component Jan. 7, 2014
8618890 Angular velocity detection apparatus Dec. 31, 2013
8606376 Method of actuating a system, apparatus for modifying a control signal for actuation of a system and method of tuning such an apparatus Dec. 10, 2013
8604888 Oscillators having arbitrary frequencies and related systems and methods Dec. 10, 2013
8593230 Circuit and method for correcting temperature dependence of frequency for piezoresistive oscillators Nov. 26, 2013
8575819 Microelectromechanical resonators with passive frequency tuning using built-in piezoelectric-based varactors Nov. 5, 2013
8570112 Oscillator with MEMS resonator Oct. 29, 2013
8564377 MEMS oscillator Oct. 22, 2013
8558624 Semiconductor integrated circuit Oct. 15, 2013
8542074 MEMS resonator Sep. 24, 2013
8530258 Method and apparatus for MEMS oscillator Sep. 10, 2013
8525605 Oscillator Sep. 3, 2013
8514027 Method of multi-stage substrate etching and terahertz oscillator manufactured using the same method Aug. 20, 2013
8504164 Low energy communications for implanted medical devices Aug. 6, 2013
8493157 MEMS resonator for filtering and mixing Jul. 23, 2013
8474317 Microelectromechanical device having an oscillating mass, and method for controlling a microelectromechanical device having an oscillating mass Jul. 2, 2013
8476809 Microelectromechanical systems (MEMS) resonators and related apparatus and methods Jul. 2, 2013
8471641 Switchable electrode for power handling Jun. 25, 2013
8466754 Low phase noise MEMS-based oscillator with bifurcation and parametric noise squeezing Jun. 18, 2013
8461936 MEMS oscillator Jun. 11, 2013
8461935 Hybrid system having a non-MEMS device and a MEMS device Jun. 11, 2013
8456250 Methods and apparatus for tuning devices having resonators Jun. 4, 2013
8456252 Dual in-situ mixing for extended tuning range of resonators Jun. 4, 2013
8451068 Oscillator May. 28, 2013
8451070 Self-powered microelectromechanical oscillator May. 28, 2013
8446227 Methods and apparatus for tuning devices having mechanical resonators May. 21, 2013
8436690 Hybrid system having a non-MEMS device and a MEMS device May. 7, 2013
8432232 MEMS device and oscillator Apr. 30, 2013
8427249 Resonator with reduced acceleration sensitivity and phase noise using time domain switch Apr. 23, 2013
8421545 Oscillators and methods of operating the same Apr. 16, 2013
8410860 Oscillator with resonator generating terahertz wave Apr. 2, 2013
8390387 MEMS resonators Mar. 5, 2013
8390388 Differential cancellation of vibration interference in oscillators Mar. 5, 2013
8378758 Parametric feedback oscillators Feb. 19, 2013
8378757 Resonator using carbon nano substance and method of manufacturing resonator Feb. 19, 2013
8378756 Drive loop for MEMS oscillator Feb. 19, 2013

1 2 3 4 5










 
 
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