Inventor

KOKI GENWA

JP3 patents

Patents

3 patents

US7011887B2Mar 14, 2006

IT-cut quartz crystal unit

NIHON DEMPA KOGYO CO7 citations70

US7061164B2Jun 13, 2006

Crystal oscillator

NIHON DEMPA KOGYO CO4 citations58

US6680560B2Jan 20, 2004

Heat resistant quartz-crystal unit

NIHON DEMPA KOGYO CO2 citations56