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:
Dec. 18, 2012
Filed:
Apr. 30, 2010
Jonathan Day Lucas, Encinitas, CA (US);
Manna Leon Warburton, San Diego, CA (US);
Todd Mlsna, Carlsbad, CA (US);
Sanjay V. Patel, San Diego, CA (US);
Stephen Terrence Hobson, San Marcos, CA (US);
Jonathan Day Lucas, Encinitas, CA (US);
Manna Leon Warburton, San Diego, CA (US);
Todd Mlsna, Carlsbad, CA (US);
Sanjay V. Patel, San Diego, CA (US);
Stephen Terrence Hobson, San Marcos, CA (US);
Seacoast Science, Inc., Carlsbad, CA (US);
Abstract
Apparatus, systems and methods are described for preconcentrators, chemical sensing systems and gas chromatographs. A preconcentrator is described that comprises a hollow enclosure containing a sorbent material. The enclosure may be a capillary tube that can be formed in to a desired shape and that may be heated. Heating may be accomplished by passing an electrical current through the capillary or other hollow enclosure form. The sorbent material can be a liquid, a solid, a porous ceramic material and/or a chemiselective polymer. The sorbent material can be coated to the inner wall of the enclosure. The hollow enclosure may be maintained in an insulated chamber. The preconcentrator acts to concentrate a vapor passed through the preconcentrator to a chemical sensing array that can detect chemicals present in the vapor. A gas passed through the hollow enclosure can provide a chemically concentrated input to a chromatographic column.