The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2008
Filed:
Aug. 09, 2006
Atsushi Kandori, Ebina, JP;
Yoshikatsu Ichimura, Tokyo, JP;
Takashi Ushijima, Yokohama, JP;
Yoshitaka Zaitsu, Kawasaki, JP;
Kaoru Noguchi, Tokyo, JP;
Atsushi Kandori, Ebina, JP;
Yoshikatsu Ichimura, Tokyo, JP;
Takashi Ushijima, Yokohama, JP;
Yoshitaka Zaitsu, Kawasaki, JP;
Kaoru Noguchi, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electric potential measuring apparatus includes a detecting electrode, a modulator for changing an electrostatic capacitance between a measurement object and the detecting electrode by mechanical vibration, a charge detector for detecting the amount of charges electrostatically induced in the detecting electrode by the modulator, and a vibration generating-detecting unit for selectively performing either a vibration generating function of exciting the mechanical vibration, or a detecting function of detecting the condition of the mechanical vibration.