Patents by Inventor W. Kevin Grace

W. Kevin Grace 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).

  • Patent number: 6309886
    Abstract: Apparatus and method enable imaging multiple fluorescent sample particles in a single flow channel. A flow channel defines a flow direction for samples in a flow stream and has a viewing plane perpendicular to the flow direction. A laser beam is formed as a ribbon having a width effective to cover the viewing plane. Imaging optics are arranged to view the viewing plane to form an image of the fluorescent sample particles in the flow stream, and a camera records the image formed by the imaging optics.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: October 30, 2001
    Assignee: The Regents of the University of California
    Inventors: W. Patrick Ambrose, W. Kevin Grace, Peter M. Goodwin, James H. Jett, Alan Van Orden, Richard A. Keller
  • Patent number: 4884886
    Abstract: An apparatus and method for making multiparameter light scattering measurements from suspensions of biological particles is described. Fourteen of the sixteen Mueller matrix elements describing the particles under investigation can be substantially individually determined as a function of scattering angle and probing radiations wavelength, eight elements simultaneously for each of two apparatus configurations using an apparatus which incluees, in its simplest form, two polarization modulators each operating at a chosen frequency, one polarizer, a source of monochromatic electromagnetic radiation, a detector sensitive to the wavelength of radiation employed, eight phase-sensitive detectors, and appropriate electronics. A database of known biological particle suspensions can be assembled, and unknown samples can be quickly identified once measurements are performed on it according to the teachings of the subject invention, and a comparison is made with the database.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: December 5, 1989
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Gary C. Salzman, Charles T. Gregg, W. Kevin Grace, Richard D. Hiebert