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. 31, 1989
Filed:
Apr. 07, 1988
Applicant:
Inventors:
Gunter Knapp, Graz, AT;
Andreas Schalk, Graz, AT;
Assignee:
Anton Paar KG, Graz, AT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315248 ; 31511121 ; 315267 ; 31323131 ; 313570 ; 313607 ; 313631 ; 333 / ; 333 / ;
Abstract
The invention concerns a method and apparatus to produce a noble-gas plasma for excitation in optical emission spectrometry. The apparatus includes an hf generator feeding an oscillation circuit consisting of at least one inductor and one capacitor. The capcitor includes at least two capacitor plates which are so shaped and mutually arranged that they enclose a cavity in which the plasma may form.