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:
Feb. 15, 2011
Filed:
Sep. 22, 2004
Tamaki Watanabe, Saitama, JP;
Takeshi Katayama, Tokyo, JP;
Masayuki Kase, Saitama, JP;
Tokihiro Ikeda, Saitama, JP;
Shin-ichi Watanabe, Tokyo, JP;
Takeo Kawaguchi, Akashi, JP;
Yu-ichiro Sasaki, Machida, JP;
Bunji Mizuno, Ikoma, JP;
Hisataka Kanada, Katano, JP;
Tamaki Watanabe, Saitama, JP;
Takeshi Katayama, Tokyo, JP;
Masayuki Kase, Saitama, JP;
Tokihiro Ikeda, Saitama, JP;
Shin-ichi Watanabe, Tokyo, JP;
Takeo Kawaguchi, Akashi, JP;
Yu-ichiro Sasaki, Machida, JP;
Bunji Mizuno, Ikoma, JP;
Hisataka Kanada, Katano, JP;
Riken, Wako-shi, Saitama, JP;
Panasonic Corporation, Kadoma-shi, Osaka, JP;
Abstract
A beam current sensor is composed of a cylindrical super-conductive body having a bridge unit formed on the outer diameter side wherein a beam passes through the inner diameter side. The sensor improves efficiency of creating a magnetic field from a current and can measure a beam current as 1 nA. The bridge unit includes a first coil unit formed so as to have an eddy shape wound counterclockwise from the outer diameter side toward the inner diameter side; a second coil unit formed so as to have an eddy shape wound clockwise from the outer diameter side toward the inner diameter side; and a connection portion for connecting the center position of the inner diameter side of the first coil unit with the center position of the inner diameter side of the second coil.