HK

Hirofumi Kawashima

PL Piedek Technical Laboratory: 6 patents #1 of 1Top 100%
Overall (2005): #4,632 of 245,428Top 2%
6
Patents 2005

Issued Patents 2005

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
6959472 Method for manufacturing quartz crystal oscillator 2005-11-01
6915548 Method for manufacturing quartz crystal tuning fork resonator, quartz crystal unit having quartz crystal tuning fork resonator, and quartz crystal oscillator having quartz crystal unit 2005-07-12
6911765 Quartz crystal tuning fork resonator 2005-06-28
6903618 Quartz crystal unit, and quartz crystal oscillator having quartz crystal unit 2005-06-07
6898832 Method for manufacturing a quartz crystal unit 2005-05-31
6897743 Electronic apparatus with two quartz crystal oscillators utilizing different vibration modes 2005-05-24