Patents by Inventor Yin-Fong Su

Yin-Fong Su has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Micro-machined virtual impactor and method of operation
    Patent number: 6010554
    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.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: January 4, 2000
    Assignees: Battelle Memorial Institute, MesoSystems Technology, Inc.
    Inventors: Joseph G. Birmingham, Patricia M. Irving, Yin-Fong Su, Charles J. Call, Bruce D. Lerner, Robert S. Wegeng