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:
Apr. 11, 1989
Filed:
Feb. 25, 1987
William H Fisher, Thornhill, CA;
William R Stott, Aurora, CA;
Bruce A Thomson, Etobicoke, CA;
Adam Weisz-Margulescu, Thornhill, CA;
MDS Health Group Limited, Etobicoke, CA;
Abstract
A disposable plastic cartridge contains three fine lightweight wire mesh collectors, each of phosphor bronze. One collector has an oxidized surface for collecting drug particulates. The other two have surfaces electroplated with zinc to form a rough multi-fissured surface for trapping low volatility vapors. In use, a portion of a warm sample air stream is chilled and passed through the collectors in parallel for sample collection. Simultaneously part of the sample air stream by-passes the chiller and is fed directly into a mass analyzer for real time analysis. Next, both collection and real time analysis are terminated, and each collector is desorbed in sequence with a pulse of hot air which flows into the mass analyzer for sequential analysis.