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. 12, 2015
Filed:
Sep. 27, 2011
Susanne Vera Hering, Berkeley, CA (US);
Gregory Stephen Lewis, Berkeley, CA (US);
Steven Russel Spielman, Oakland, CA (US);
Charles Sherman Henry, Fort Collins, CO (US);
Scott Douglas Noblitt, Fort Collins, CO (US);
Jeffrey Lee Collett, Jr., Fort Collins, CO (US);
Susanne Vera Hering, Berkeley, CA (US);
Gregory Stephen Lewis, Berkeley, CA (US);
Steven Russel Spielman, Oakland, CA (US);
Charles Sherman Henry, Fort Collins, CO (US);
Scott Douglas Noblitt, Fort Collins, CO (US);
Jeffrey Lee Collett, Jr., Fort Collins, CO (US);
Aerosol Dynamics Inc., Berkeley, CA (US);
Colorado State University Research, Fort Collins, CO (US);
Abstract
This technology is a method and apparatus for the semi-continuous measurement of the concentration of constituents of airborne particles which couples a laminar flow, water condensation particle collector to a microfluidic device for assay of particle chemical composition by electrophoresis. The technology has been used for the assay of sulfates, nitrates, chlorides, and organic acids contained in fine and submicrometer atmospheric particles. For these compounds the apparatus and method described is capable of one-minute time resolution at concentrations at the level of micrograms of analyte species per cubic meter of air. Extension to other analytes is possible.