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:
Nov. 05, 2002
Filed:
Mar. 10, 2000
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G21K 7/00 ; G01N 2/300 ;
U.S. Cl.
CPC ...
G21K 7/00 ; G01N 2/300 ;
Abstract
In quantitative analysis of an element in a specimen in which characteristic X-rays generated from the specimen upon irradiation with an electron beam are detected, absorption current values of the specimen and a reference sample are measured before the final measurement, the value of ratio between thus measured values is determined, and the absorption current value of the specimen measured at the time of final measurement is multiplied by this value of ratio, so as to calculate the irradiation current value thereof, thereby substantially monitoring the irradiation current.