Inventor
KUROSAWA TAMOTSU
JP3 patents
Patents
3 patentsUS7174620B2Feb 13, 2007
Method of manufacturing thin quartz crystal wafer
NIHON DEMPA KOGYO CO58 citations94
US7564177B2Jul 21, 2009
Crystal unit having stacked structure
NIHON DEMPA KOGYO CO31 citations90
US6930440B2Aug 16, 2005
Tuning fork type crystal unit and bar type crystal unit
NIHON DEMPA KOGYO CO4 citations60