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. 04, 2000
Filed:
Jun. 23, 1997
Joseph G Birmingham, Richland, WA (US);
Patricia M Irving, Kennewick, WA (US);
Yin-Fong Su, Richland, WA (US);
Charles J Call, Pasco, WA (US);
Bruce D Lerner, Bel Air, MD (US);
Robert S Wegeng, Richland, WA (US);
Battelle Memorial Institute, Richland, WA (US);
MesoSystems Technology, Inc., Richland, WA (US);
Abstract
A micro-machined virtual impactor device to permit the separation, collection and concentration of a significant portion of environmental particulates having a diameter of less than ten microns and its method of operation. The device includes a plurality of projections, each having a virtual impact surface that defines an aperture in a stagnant zone of fluid flow. A major portion of the particulate material is concentrated into a minor portion of the fluid which is processed through the aperture, where it is collected for subsequent analysis.