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:
Jun. 27, 1995
Filed:
Oct. 08, 1993
Applicant:
Inventors:
Akimichi Kira, Kyoto, JP;
Yoshimichi Sato, Kyoto, JP;
Assignee:
Horiba, Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
378 45 ; 370 44 ;
Abstract
A method and apparatus for measuring fluorescent X-rays from a sample include an X-ray voltage tube having a variable applied voltage during the measurement cycle. The resulting fluorescent X-rays are measured by a detector that output representative signals. The representative signals are used to calculate a characteristic energy spectrum which can be displayed to an operator. The use of a varying voltage ensures detecting both light and heavy elements. An X-ray filter can also be inserted to prevent any characteristic X-rays from being generated from the X-ray gun itself.