Assignee
NIHON DEMPA KOGYO CO
JP·429 granted patents·139 pending applications·2,725 citations·filing 1974–2025
Top patents by PatentIndex Score
568 records- 0197US7378916B2Crystal oscillator device, oscillation method and heaterNIHON DEMPA KOGYO CO·Filed 2005·Granted May 27, 2008·46 cites·13 claims
- 0296US5081431ADigital temperature-compensated oscillatorNIHON DEMPA KOGYO CO·Filed 1991·Granted Jan 14, 1992·126 cites·5 claims
- 0394US7602107B2Surface mount type crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2006·Granted Oct 13, 2009·26 cites·6 claims
- 0494US7514852B2PiezooscillatorNIHON DEMPA KOGYO CO·Filed 2006·Granted Apr 7, 2009·32 cites·13 claims
- 0593US7471162B2Surface mount type temperature-compensated crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2007·Granted Dec 30, 2008·27 cites·15 claims
- 0693US7345552B2Constant temperature type crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2005·Granted Mar 18, 2008·28 cites·10 claims
- 0792US7764145B2Piezoelectric resonator, method of manufacturing the same and electronic part using the sameNIHON DEMPA KOGYO CO·Filed 2007·Granted Jul 27, 2010·26 cites·6 claims
- 0892US7382204B2Constant temperature crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2006·Granted Jun 3, 2008·25 cites·20 claims
- 0992US7378780B2Surface mount type crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2006·Granted May 27, 2008·31 cites·12 claims
- 1092US7088032B2Crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2005·Granted Aug 8, 2006·26 cites·11 claims
- 1192US5136817AAutomatic lapping apparatus for piezoelectric materialsNIHON DEMPA KOGYO CO·Filed 1991·Granted Aug 11, 1992·98 cites·1 claims
- 1291US10819307B2Crystal unit and manufacturing method thereofNIHON DEMPA KOGYO CO·Filed 2018·Granted Oct 27, 2020·7 cites·3 claims
- 1391US7564177B2Crystal unit having stacked structureNIHON DEMPA KOGYO CO·Filed 2007·Granted Jul 21, 2009·31 cites·7 claims
- 1491US7174620B2Method of manufacturing thin quartz crystal waferNIHON DEMPA KOGYO CO·Filed 2003·Granted Feb 13, 2007·58 cites·9 claims
- 1590USD703332SUltrasonic probeNIHON DEMPA KOGYO CO·Filed 2013·Granted Apr 22, 2014·43 cites·1 claims
- 1690US7932786B2Surface mount type crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2009·Granted Apr 26, 2011·16 cites·4 claims
- 1789US7398163B2Sensing apparatusNIHON DEMPA KOGYO CO·Filed 2005·Granted Jul 8, 2008·13 cites·10 claims
- 1888US10291235B2Oven controlled crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2017·Granted May 14, 2019·4 cites·6 claims
- 1988US8053952B2Piezoelectric resonator with scattering-prevention film to prevent short-circuit of the excitation electrodeNIHON DEMPA KOGYO CO·Filed 2010·Granted Nov 8, 2011·9 cites·6 claims
- 2088US8018126B2Piezoelectric devices exhibiting reduced CI degradationNIHON DEMPA KOGYO CO·Filed 2010·Granted Sep 13, 2011·11 cites·16 claims
- 2188US6445254B1Crystal oscillator and method of bonding IC chip useful for fabricating crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2000·Granted Sep 3, 2002·43 cites·19 claims
- 2287US8907544B2Ultrasonic transducerNIHON DEMPA KOGYO CO·Filed 2013·Granted Dec 9, 2014·6 cites·8 claims
- 2387US8049572B2Oven-controlled crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2009·Granted Nov 1, 2011·13 cites·6 claims
- 2487US7489208B2Surface mount crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2007·Granted Feb 10, 2009·16 cites·5 claims
- 2587US7256659B2Temperature compensated crystal oscillator and method of manufacturing sameNIHON DEMPA KOGYO CO·Filed 2005·Granted Aug 14, 2007·16 cites·9 claims
- 2687US7034441B2Surface mount crystal unit and surface mount crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2003·Granted Apr 25, 2006·33 cites·15 claims
- 2786US7554245B2Ultrasonic probeNIHON DEMPA KOGYO CO·Filed 2006·Granted Jun 30, 2009·12 cites·5 claims
- 2886US6870430B2PLL-controlled oscillatorNIHON DEMPA KOGYO CO·Filed 2003·Granted Mar 22, 2005·23 cites·11 claims
- 2985US9716511B1Signal processing deviceNIHON DEMPA KOGYO CO·Filed 2017·Granted Jul 25, 2017·6 cites·7 claims
- 3085US7692513B2Acoustic surface wave filter module and method of manufacturing the sameNIHON DEMPA KOGYO CO·Filed 2009·Granted Apr 6, 2010·12 cites·4 claims
- 3184US10263597B2Crystal unitNIHON DEMPA KOGYO CO·Filed 2016·Granted Apr 16, 2019·4 cites·5 claims
- 3284USD704844SUltrasonic probeNIHON DEMPA KOGYO CO·Filed 2013·Granted May 13, 2014·30 cites·1 claims
- 3384US8053953B2Electronic component for surface mountingNIHON DEMPA KOGYO CO·Filed 2007·Granted Nov 8, 2011·13 cites·12 claims
- 3484US7760034B2Surface-mount type crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2008·Granted Jul 20, 2010·14 cites·5 claims
- 3584US7595701B2Crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2007·Granted Sep 29, 2009·12 cites·5 claims
- 3684US6798305B2High frequency oscillator using transmission line resonatorNIHON DEMPA KOGYO CO·Filed 2002·Granted Sep 28, 2004·20 cites·34 claims
- 3783US10659005B2At-cut crystal element, crystal resonator and crystal unitNIHON DEMPA KOGYO CO·Filed 2016·Granted May 19, 2020·4 cites·7 claims
- 3883US9190250B2Radiation measurement apparatusNIHON DEMPA KOGYO CO·Filed 2014·Granted Nov 17, 2015·6 cites·2 claims
- 3983US7471165B2High-frequency balunNIHON DEMPA KOGYO CO·Filed 2006·Granted Dec 30, 2008·12 cites·5 claims
- 4083US7352117B2Piezoelectric vibratorNIHON DEMPA KOGYO CO·Filed 2006·Granted Apr 1, 2008·14 cites·4 claims
- 4182US9041476B2Crystal controlled oscillatorNIHON DEMPA KOGYO CO·Filed 2013·Granted May 26, 2015·6 cites·9 claims
- 4282US8013683B2Constant-temperature type crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2009·Granted Sep 6, 2011·9 cites·5 claims
- 4382US7906890B2Piezoelectric vibrating pieces, frames, and devicesNIHON DEMPA KOGYO CO·Filed 2009·Granted Mar 15, 2011·13 cites·21 claims
- 4482US7135810B2Surface mount crystal oscillatorNIHON DEMPA KOGYO CO·Filed 2004·Granted Nov 14, 2006·50 cites·17 claims
- 4582US7135805B2Surface acoustic wave transducerNIHON DEMPA KOGYO CO·Filed 2004·Granted Nov 14, 2006·23 cites·16 claims
- 4682US6756857B2Planar circuitNIHON DEMPA KOGYO CO·Filed 2002·Granted Jun 29, 2004·17 cites·18 claims
- 4782US2026088760A1Crystal element, quartz crystal device using the same, and intermediate wafer for quartz crystal device, and method for manufacturing crystal elementNIHON DEMPA KOGYO CO·Filed 2025·Application pending·0 cites
- 4881US10529910B2Piezoelectric deviceNIHON DEMPA KOGYO CO·Filed 2017·Granted Jan 7, 2020·3 cites·12 claims
- 4981US7984536B2Method of manufacturing a piezoelectric resonatorNIHON DEMPA KOGYO CO·Filed 2009·Granted Jul 26, 2011·9 cites·5 claims
- 5081US7508281B2Frequency synthesizerNIHON DEMPA KOGYO CO·Filed 2007·Granted Mar 24, 2009·12 cites·6 claims
Showing the top 50 of 568 patent records by PatentIndex Score.
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