Assignee
KAWASHIMA HIROFUMI
JP·10 granted patents·1 pending application·81 citations·filing 2006–2011
Top patents by PatentIndex Score
11 records- 0193US8127427B2Quartz crystal unit, quartz crystal oscillator having quartz crystal unit, and electronic apparatus having quartz crystal oscillatorKAWASHIMA HIROFUMI·Filed 2010·Granted Mar 6, 2012·12 cites·37 claims
- 0292US8122587B2Manufacturing method of quartz crystal unitKAWASHIMA HIROFUMI·Filed 2009·Granted Feb 28, 2012·21 cites·45 claims
- 0390US8096042B2Method for manufacturing a quartz crystal resonator, quartz crystal unit and quartz crystal oscillatorKAWASHIMA HIROFUMI·Filed 2010·Granted Jan 17, 2012·8 cites·35 claims
- 0486US8572824B2Method for manufacturing quartz crystal unit and quartz crystal oscillator having the quartz crystal unitKAWASHIMA HIROFUMI·Filed 2011·Granted Nov 5, 2013·6 cites·38 claims
- 0586US8091189B2Method for manufacturing quartz crystal unit, quartz crystal oscillator and electronic apparatusKAWASHIMA HIROFUMI·Filed 2009·Granted Jan 10, 2012·9 cites·38 claims
- 0682US8217736B2Quartz crystal unit, and manufacturing method of the same and manufacturing method of quartz crystal oscillator having quartz crystal unitKAWASHIMA HIROFUMI·Filed 2008·Granted Jul 10, 2012·9 cites·38 claims
- 0775US9077308B2Method for manufacturing a quartz crystal unit, quartz crystal oscillator and electronic apparatusKAWASHIMA HIROFUMI·Filed 2011·Granted Jul 7, 2015·3 cites·33 claims
- 0872US8240023B2Method for manufacturing a quartz crystal unitKAWASHIMA HIROFUMI·Filed 2009·Granted Aug 14, 2012·5 cites·47 claims
- 0971US8127426B2Electronic apparatus having quartz crystal oscillating circuitsKAWASHIMA HIROFUMI·Filed 2008·Granted Mar 6, 2012·4 cites·37 claims
- 1069USRE44423EMethod of manufacturing a quartz crystal unitKAWASHIMA HIROFUMI·Filed 2007·Granted Aug 13, 2013·4 cites·84 claims
- 1145US2006255882A1Electronic apparatusKAWASHIMA HIROFUMI·Filed 2006·Application pending·0 cites
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