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:
Jan. 19, 2010
Filed:
Jun. 19, 2007
Neil S. Arnold, Sandy, UT (US);
Gary Bodily, Logan, UT (US);
Karen Bodily, St. George, UT (US);
Seer Technology, Inc., Salt Lake City, UT (US);
Abstract
An apparatus, system, and method are disclosed for low cost high resolution chemical detection. The apparatus includes two outer sealing bodies with flow channels etched into the bodies. Two gas chromatography (GC) columns are between the outer bodies, with a valve that switches flow regimes from series flow through the two GC columns to sample flowing directly to each GC column. The flow regimes are achieved with a single pump or dual pumps, and with one to three flow restrictions. The apparatus includes a preconcentration tube for concentrating chemicals of interest from the sample, and a sample switching valve and sampling pump to switch the sample flow from concentrating sample to delivering concentrated sample. The apparatus includes an engineered leak to equalize flow between a sample channel and a detector circuit. The sample channels may have impermeable inserts allowing the apparatus to measure chemicals in the parts-per-billion range.