Assignee
PIEDEK TECHNICAL LAB
JP·36 granted patents·529 citations·filing 2001–2014
Top patents by PatentIndex Score
36 records- 0194US6898832B2Method for manufacturing a quartz crystal unitPIEDEK TECHNICAL LAB·Filed 2002·Granted May 31, 2005·47 cites·36 claims
- 0294US6791243B2Quartz crystal unit and its manufacturing methodPIEDEK TECHNICAL LAB·Filed 2002·Granted Sep 14, 2004·45 cites·24 claims
- 0393US7845063B2Quartz crystal unit and method for manufacturing a quartz crystal unit and electronic apparatusPIEDEK TECHNICAL LAB·Filed 2008·Granted Dec 7, 2010·18 cites·35 claims
- 0492US7193354B2Resonator, unit having resonator, oscillator having unit and electronic apparatus having oscillatorPIEDEK TECHNICAL LAB·Filed 2004·Granted Mar 20, 2007·38 cites·39 claims
- 0591US7412764B2Method for manufacturing quartz crystal unit and electronic apparatus having quartz crystal unitPIEDEK TECHNICAL LAB·Filed 2005·Granted Aug 19, 2008·19 cites·36 claims
- 0691US6911765B2Quartz crystal tuning fork resonatorPIEDEK TECHNICAL LAB·Filed 2001·Granted Jun 28, 2005·42 cites·25 claims
- 0790US7779530B2Method for manufacturing a quartz crystal unitPIEDEK TECHNICAL LAB·Filed 2008·Granted Aug 24, 2010·12 cites·38 claims
- 0890US7536768B2Method for manufacturing quartz crystal unit, quartz crystal oscillator and electronic apparatusPIEDEK TECHNICAL LAB·Filed 2005·Granted May 26, 2009·14 cites·27 claims
- 0990US6915548B2Method for manufacturing quartz crystal tuning fork resonator, quartz crystal unit having quartz crystal tuning fork resonator, and quartz crystal oscillator having quartz crystal unitPIEDEK TECHNICAL LAB·Filed 2003·Granted Jul 12, 2005·35 cites·41 claims
- 1090US6903618B2Quartz crystal unit, and quartz crystal oscillator having quartz crystal unitPIEDEK TECHNICAL LAB·Filed 2004·Granted Jun 7, 2005·35 cites·34 claims
- 1189US7944131B2Quartz crystal unit, quartz crystal oscillator and manufacturing method of the samePIEDEK TECHNICAL LAB·Filed 2008·Granted May 17, 2011·12 cites·38 claims
- 1289US7564326B2Electronic apparatus and manufacturing method of the samePIEDEK TECHNICAL LAB·Filed 2007·Granted Jul 21, 2009·12 cites·31 claims
- 1389US7342352B2Resonator, unit having resonator, oscillator having unit and electronic apparatus having oscillatorPIEDEK TECHNICAL LAB·Filed 2006·Granted Mar 11, 2008·14 cites·24 claims
- 1488US8866567B2Quartz crystal unit, quartz crystal oscillator and electronic apparatusPIEDEK TECHNICAL LAB·Filed 2013·Granted Oct 21, 2014·5 cites·35 claims
- 1588US6707234B1Quartz crystal unit, its manufacturing method and quartz crystal oscillatorPIEDEK TECHNICAL LAB·Filed 2002·Granted Mar 16, 2004·33 cites·20 claims
- 1687US7528682B2Electronic apparatus having display portion and oscillator and manufacturing method of the samePIEDEK TECHNICAL LAB·Filed 2006·Granted May 5, 2009·13 cites·25 claims
- 1787US7071794B2Quartz crystal resonator, unit having resonator, oscillator having unit, electronic apparatus having oscillator, and method for manufacturing electronic apparatusPIEDEK TECHNICAL LAB·Filed 2003·Granted Jul 4, 2006·20 cites·35 claims
- 1887US6959472B2Method for manufacturing quartz crystal oscillatorPIEDEK TECHNICAL LAB·Filed 2003·Granted Nov 1, 2005·24 cites·58 claims
- 1984US8375559B2Manufacturing method of a quartz crystal unit , a quartz crystal oscillator and an electronic apparatusPIEDEK TECHNICAL LAB·Filed 2010·Granted Feb 19, 2013·5 cites·41 claims
- 2084US7170218B2Electronic apparatus with two quartz crystal oscillators utilizing different vibration modesPIEDEK TECHNICAL LAB·Filed 2005·Granted Jan 30, 2007·12 cites·48 claims
- 2182US7723904B2Resonator, unit having resonator, oscillator having unit and electronic apparatus having oscillatorPIEDEK TECHNICAL LAB·Filed 2008·Granted May 25, 2010·9 cites·33 claims
- 2282US6717336B2Width-extensional mode piezoelectric crystal resonatorPIEDEK TECHNICAL LAB·Filed 2002·Granted Apr 6, 2004·22 cites·31 claims
- 2381US6897743B2Electronic apparatus with two quartz crystal oscillators utilizing different vibration modesPIEDEK TECHNICAL LAB·Filed 2003·Granted May 24, 2005·19 cites·43 claims
- 2478US8806738B2Method for manufacturing quartz crystal unit, quartz crystal oscillator and electronic apparatusPIEDEK TECHNICAL LAB·Filed 2013·Granted Aug 19, 2014·3 cites·45 claims
- 2572US9209381B2Quartz crystal unit, quartz crystal oscillator and electronic apparatusPIEDEK TECHNICAL LAB·Filed 2013·Granted Dec 8, 2015·3 cites·29 claims
- 2670US8749124B2Quartz crystal unit, quartz crystal oscillator and electronic apparatusPIEDEK TECHNICAL LAB·Filed 2013·Granted Jun 10, 2014·2 cites·38 claims
- 2767US9203135B2Method for manufacturing quartz crystal resonatorPIEDEK TECHNICAL LAB·Filed 2013·Granted Dec 1, 2015·2 cites·27 claims
- 2866US7365478B2Piezoelectric crystal resonator, piezoelectric crystal unit having the crystal resonator and electronic apparatus having the crystal resonatorPIEDEK TECHNICAL LAB·Filed 2004·Granted Apr 29, 2008·10 cites·20 claims
- 2957USRE41671EQuartz crystal tuning fork resonatorPIEDEK TECHNICAL LAB·Filed 2007·Granted Sep 14, 2010·2 cites·45 claims
- 3056USRE45582EMethod for manufacturing a quartz crystal unitPIEDEK TECHNICAL LAB·Filed 2013·Granted Jun 23, 2015·0 cites·59 claims
- 3155USRE45829EMethod for manufacturing a quartz crystal unitPIEDEK TECHNICAL LAB·Filed 2014·Granted Dec 29, 2015·0 cites·63 claims
- 3255US7768179B2Quartz crystal unit, quartz crystal oscillator having quartz crystal unit and electronic apparatus having quartz crystal oscillatorPIEDEK TECHNICAL LAB·Filed 2008·Granted Aug 3, 2010·2 cites·37 claims
- 3353US8766516B2Unit, oscillator and electronic apparatusPIEDEK TECHNICAL LAB·Filed 2013·Granted Jul 1, 2014·0 cites·35 claims
- 3451US8614537B2Quartz crystal unit, quartz crystal oscillator and electronic apparatusPIEDEK TECHNICAL LAB·Filed 2013·Granted Dec 24, 2013·0 cites·35 claims
- 3549US8358053B2Unit, oscillator having unit and electronic apparatus having oscillatorPIEDEK TECHNICAL LAB·Filed 2010·Granted Jan 22, 2013·0 cites·34 claims
- 3647US8358052B2Unit having resonator, oscillator having unit and electronic apparatus having unitPIEDEK TECHNICAL LAB·Filed 2010·Granted Jan 22, 2013·0 cites·35 claims
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