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:
May. 30, 1978
Filed:
Apr. 25, 1977
Applicant:
Inventors:
Assignee:
The Governing Counsel of the University of Toronto, Toronto, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 23 ; 250282 ;
Abstract
A method of analyzing a trace gas, in which the trace gas is transported in a carrier gas stream into a reaction chamber where the trace gas is ionized. The carrier gas includes or is a reagent gas which is ionized in the reaction chamber and the ions of which in turn form trace gas ions. The carrier gas, which is cryopumpable, is then injected with the trace gas ions into a vacuum chamber, the walls of which are cooled to cryopump the reagent gas and thus strip it away from the trace gas ions. The trace gas ions are focussed into an analyzer and analyzed.