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Class Information
Number: 310/370
Name: Electrical generator or motor structure > Non-dynamoelectric > Piezoelectric elements and devices > Piezoelectric element shape > "u" or "tuning fork" shape
Description: Subject matter wherein the piezoelectric element is, or includes a portion shaped essentially like the letter "U" or "Y" or the letter "V" with a stem attached to the base (thus resembling a tuning fork).










Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8692632 Resonator element, resonator, oscillator, and electronic device Apr. 8, 2014
8674590 Vibrating piece substrate and tuning-fork vibrating piece Mar. 18, 2014
8663487 Method for manufacturing crystal oscillator Mar. 4, 2014
8665032 Flexural mode resonator element, resonating device, and electronic apparatus Mar. 4, 2014
8659211 Quad and dual cantilever transduction apparatus Feb. 25, 2014
8653899 Piezoelectric vibrator, oscillator, electronic device and radio timepiece Feb. 18, 2014
8643254 Piezoelectric device with a package including a convex part Feb. 4, 2014
8633635 Microelectromechanical resonators with thermally-actuated frequency tuning beams Jan. 21, 2014
8633788 Piezoelectric vibration piece and piezoelectric device Jan. 21, 2014
8633638 Piezoelectric resonator element, piezoelectric resonator, and acceleration sensor for reducing vibration sensitivity in at least one axis Jan. 21, 2014
8633637 Resonator element, resonator, physical quantity sensor, and electronic equipment that have steps on a side surface of a vibrating arm Jan. 21, 2014
8615857 Method of manufacturing piezoelectric vibrators Dec. 31, 2013
8614537 Quartz crystal unit, quartz crystal oscillator and electronic apparatus Dec. 24, 2013
8610338 Tuning-fork type piezoelectric vibrating piece with enhanced frequency adjustment and piezoelectric device incorporating same Dec. 17, 2013
8610337 Piezoelectric device and method for manufacturing same Dec. 17, 2013
8604677 Piezoelectric devices including frequency-adjustment units Dec. 10, 2013
8598770 Resonator element having a notched base Dec. 3, 2013
8593036 High-efficiency MEMS micro-vibrational energy harvester and process for manufacturing same Nov. 26, 2013
8593039 Resonator element having a notched base Nov. 26, 2013
8587184 Tuning fork quartz crystal resonator including concave of continous curved surface on base Nov. 19, 2013
8569938 Tuning fork quartz crystal resonator including recess on base Oct. 29, 2013
8558435 Package structure of a piezoelectric device mounting and supporting a piezoelectric vibration element Oct. 15, 2013
8558628 Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus, and radio timepiece Oct. 15, 2013
8552624 Impact resistance vibrating reed, vibrator, oscillator, and electronic device Oct. 8, 2013
8552625 Cantilever type acoustic transduction apparatus Oct. 8, 2013
8552805 Piezoelectric vibrator, method of manufacturing piezoelectric vibrator, oscillator, electronic equipment and radio-controlled timepiece Oct. 8, 2013
8541929 Piezoelectric devices and methods for manufacturing same Sep. 24, 2013
8542070 Piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece Sep. 24, 2013
8525606 Vibrator element, vibrator, oscillator, and electronic device Sep. 3, 2013
8514029 Piezoelectric vibrator, oscillator, electronic equipment and radio-controlled timepiece, and method of manufacturing piezoelectric vibrator Aug. 20, 2013
RE44423 Method of manufacturing a quartz crystal unit Aug. 13, 2013
8497620 Piezoelectric resonator element, piezoelectric resonator, and acceleration sensor Jul. 30, 2013
8487516 Scanning of wireless environment in a femto-based home macro sector Jul. 16, 2013
8476810 Piezoelectric device and piezoelectric device manufacturing method Jul. 2, 2013
8476811 Piezoelectric device with tuning-fork type piezoelectric vibrating piece Jul. 2, 2013
8460561 Crystal oscillator piece and method for manufacturing the same Jun. 11, 2013
8456065 Stiffness-enhanced surface-mounted piezoelectric devices Jun. 4, 2013
8446079 Piezoelectric resonator with vibration isolation May. 21, 2013
8436515 Piezoelectric vibrator having a piezoelectric vibrating strip and a bonding film with laser irradiation marks May. 7, 2013
8432087 Resonator element, resonator, oscillator, and electronic device Apr. 30, 2013
8432233 Micro-electromechanical resonator geometry Apr. 30, 2013
8427035 Vibration device and electronic device Apr. 23, 2013
8421546 Piezoelectric vibrator, oscillator, electronic equipment timepiece, and radio-controlled timepiece, and method of manufacturing piezoelectric vibrator Apr. 16, 2013
8415863 Vibrating piece manufacturing method and vibrator manufacturing method Apr. 9, 2013
8416027 Vibrator element, vibrator, oscillator, and electronic device Apr. 9, 2013
8410861 Piezoelectric vibrator, oscillator, electronic equipment and radio-controlled timepiece, and method of manufacturing piezoelectric vibrator Apr. 2, 2013
8405283 Flexural vibration piece and oscillator using the same Mar. 26, 2013
8405284 Impact-resistant piezoelectric devices Mar. 26, 2013
8405474 Piezoelectric vibration piece and piezoelectric device Mar. 26, 2013
8400048 Tuning-fork type piezoelectric resonator plate comprising leg portions and a bonding portion respectively provided on first and second end faces of a base portion Mar. 19, 2013

1 2 3 4 5 6 7 8 9










 
 
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