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. 16, 1992
Filed:
Jun. 11, 1991
Applicant:
Inventors:
Dong C Liang, Vancouver, CA;
Michael W Blades, Surrey, CA;
Assignee:
University of British Columbia, Vancouver, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05H / ;
U.S. Cl.
CPC ...
31511121 ; 356312 ; 356316 ; 31323131 ; 250425 ;
Abstract
This invention pertains to an atmospheric pressure capacitively coupled plasma formed inside a graphite furnace as a source for atomic emission spectroscopy. A capacitively coupled plasma device includes an electrically conducting, hollow elongated tube and an electrically conducting rod located coaxially and substantially inside the elongated tube, an ionizable gas present inside the cylindrical tube, and a mechanism of applying a high-frequency electric potential between the tube and the rod.