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. 14, 2004
Filed:
Jun. 28, 2001
Viet Nguyen, Gaithersburg, MD (US);
Russell Chung, Springfield, VA (US);
Robert A. McGill, Lorton, VA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
Apparatus and method for detecting presence of an analyte in ambient air. The apparatus comprising a valve for admitting ambient air, a line for conveying the air to a sensing element, a housing for isolating the environment around the sensing element, an inlet port for flowing the air tho the sensing element in a turbulent flow in a direction substantially perpendicularly to the sensing element, an outlet port for conveying the air from the sensing element, and a pump in communication with the outlet port for providing suction for drawing the air to the sensing element. The method includes the steps of drawing in ambient air that may contain an analyte, projecting the air at a sensing element in a turbulent flow by flowing the air at the sensing element, the sensing element having on its surface a chemoselective material that selectively interacts with the analyte, and detecting the interaction of the analyte with the sensing element.