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:
Dec. 03, 2002
Filed:
Apr. 26, 2000
Applicant:
Inventor:
Shigeki Sakai, Kyoto, JP;
Assignee:
Nissin Electric Co., Ltd., Kyoto, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 3/102 ; G01R 3/1302 ; G01N 2/300 ;
U.S. Cl.
CPC ...
G01R 3/102 ; G01R 3/1302 ; G01N 2/300 ;
Abstract
A charge-up measuring apparatus has a plurality of measurement conductors being arranged on a plane crossing an ion beam for receiving the ion beam, a plurality of bidirectional constant-voltage elements connected to the measurement conductors in a one-to-one correspondence, and a plurality of current measuring instruments each for measuring the polarity and the magnitude of an electric current flowing through the corresponding bidirectional constant-voltage element.