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:
Nov. 30, 1993
Filed:
Jul. 24, 1992
Applicant:
Inventor:
Craig Loebig, Elk River, MN (US);
Assignee:
Modern Controls, Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 38 ; 73 232 ;
Abstract
A system for measuring the transmission rate of volatile organic chemicals through a barrier material, where a barrier material sample is clamped in a test cell so as to form a chamber on both sides of the material, with a temperature-controlled test gas conveyed into one chamber and a temperature-controlled carrier gas conveyed through the other chamber. The carrier gas is passed through a cryotrap where the organic chemicals are collected, and the carrier gas with collected chemicals is then burned in a flame ionization detector to measure the quantity of organic chemicals.