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. 01, 1985
Filed:
Apr. 07, 1983
Applicant:
Inventors:
Wilhelm Berstermann, Georgsmarienhutte, DE;
Ulrich Grisar, Georgsmarienhutte, DE;
Egon Koerfer, Osnabruck, DE;
Assignee:
Klockner-Werke Aktiengesellschaft, Duisburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356313 ;
Abstract
The determination, through spectrographic analysis, of the C content of iron and steel alloy workpieces via the C 1931.02 line is made using spectrometers having a test head that can be attached to the workpiece. The region of the discharge near the surface of the workpiece is isolated in an argon atmosphere from the light path of the discharge to be imaged onto the grating, so that the two unwanted iron lines, the Fe 1931.4 and the Fe 1930.8 lines, do not occur in the grating spectrum.