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:
Oct. 27, 2009
Filed:
Dec. 31, 2007
Hirofumi Tanaka, Tokyo, JP;
Kazuo Yamamoto, Tokyo, JP;
Hisashi Harada, Tokyo, JP;
Hiromitsu Inoue, Tokyo, JP;
Takahisa Nagayama, Tokyo, JP;
Nobuyuki Zumoto, Tokyo, JP;
Hirofumi Tanaka, Tokyo, JP;
Kazuo Yamamoto, Tokyo, JP;
Hisashi Harada, Tokyo, JP;
Hiromitsu Inoue, Tokyo, JP;
Takahisa Nagayama, Tokyo, JP;
Nobuyuki Zumoto, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
The electrode lengths of a plurality of electrodes linearly arranged in an acceleration cavity are proportional to the velocity of a traveling ion beam. Further, the electrode length is so designated that, in each half of a predetermined cycle in the ion beam direction of travel, the absolute value of a difference, relative to a length that is proportional to the beam traveling velocity is equal to or greater than a value corresponding to the phase width of the traveling ion beam, is provided for electrodes that do not exceed three units and that are fewer than electrodes allotted to half the predetermined cycle.