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:
Sep. 01, 2009
Filed:
Jul. 05, 2007
Susumu Yasuda, Machida, JP;
Takayuki Yagi, Yokohama, JP;
Takashi Ushijima, Yokohama, JP;
Yoshitaka Zaitsu, Kawasaki, JP;
Yoshikatsu Ichimura, Setagaya-ku, JP;
Susumu Yasuda, Machida, JP;
Takayuki Yagi, Yokohama, JP;
Takashi Ushijima, Yokohama, JP;
Yoshitaka Zaitsu, Kawasaki, JP;
Yoshikatsu Ichimura, Setagaya-ku, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A potential sensor including first and second detection electrodes opposed to an object of which a potential is to be measured, and a movable shutter so positioned between the detection electrodes and the potential-measured object with gaps thereto. The movable shutter can assume a first state and a second state. The first detection electrode is exposed to the potential-measured object wider when the movable shutter assumes the second state. The second detection electrode is exposed to the potential-measured object narrower when the movable shutter assumes the first state than when the movable shutter assumes the second state.