Patents by Inventor Elizabeth E. Benedetto

Elizabeth E. Benedetto 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).

  • Apparatus and method for using light scattering to determine the size of particles virtually independent of refractive index
    Patent number: 5859705
    Abstract: An apparatus and method are disclosed which allow the size of a particle suspended in a medium to be determined virtually independent of the materials'refractive index. The apparatus includes a light source, a sample holder, a detector and a spatial filter. The method of the invention comprises passing the medium containing the particle through a beam of collimated light so that the light which contacts the particle will be scattered; deterring the light which was scattered by the particles from being detected, detecting the light which was not scattered by the particle; and determining the size of the particle from the decrease in the light intensity incident on the detector.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: January 12, 1999
    Assignee: The Dow Chemical Company
    Inventors: Elizabeth E. Benedetto, John W. Lyons, Stewart P. Wood