Electricity: measuring and testing – Electrostatic field – Using modulation-type electrometer
Reexamination Certificate
2006-05-10
2009-06-16
He, Amy (Department: 2831)
Electricity: measuring and testing
Electrostatic field
Using modulation-type electrometer
C324S457000, C399S048000, C399S056000
Reexamination Certificate
active
07548066
ABSTRACT:
A potential measuring device for measuring a potential of a measurement object, includes a detection electrode that faces the measurement object, a reference electrode disposed in a vicinity of the detection electrode that is electrostatically shielded by an electrostatic shield structure with respect to the measurement object, and capacitance modulator for modulating an electrostatic coupled capacitance between the detection electrode and the measurement object to measure a potential of the measurement object by using an electric signal generated on the detection electrode and an electric signal generated on the reference electrode.
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Ichimura Yoshikatsu
Kandori Atsushi
Ushijima Takashi
Zaitsu Yoshitaka
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
He Amy
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