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:
Jun. 22, 2010
Filed:
May. 12, 2008
Applicants:
Takashi Ushijima, Yokohama, JP;
Yoshikatsu Ichimura, Tokyo, JP;
Atsushi Kandori, Ebina, JP;
Yoshitaka Zaitsu, Kawasaki, JP;
Inventors:
Takashi Ushijima, Yokohama, JP;
Yoshikatsu Ichimura, Tokyo, JP;
Atsushi Kandori, Ebina, JP;
Yoshitaka Zaitsu, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 29/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A potential measuring apparatus has a detection electrode on which an electric charge is induced according to a potential of a detection object, and a modulator for altering the generated quantity of the electric charge. The detection electrode has at least one depressed portion on a surface opposite to the detection object.