Patents by Inventor Mark L. Shenkin

Mark L. Shenkin 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).

  • Method and materials for determining particle count in a flow cytometer
    Patent number: 5451525
    Abstract: A method is provided to ascertain the total number of cells per unit volume of a cell specimen in an apparatus which does not measure the volume of a suspension containing the specimen as it is being analyzed. The method includes mixing a suspension of a known quantity of particles having a first light scatter signal with a known volume of a cell specimen having a second light scatter signal different from the first light scatter signal to obtain a suspension having a concentration of particles per specimen volume, passing each of said particles and each cell in said cell specimen, in turn, through a light beam, each of said particles and cells producing at least one forward light scattering pattern, counting the number of cells and the number of particles in a portion of said suspension, and determining the total number of cells per unit volume of the specimen.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: September 19, 1995
    Assignee: Coulter Corporation
    Inventors: Mark L. Shenkin, Ronald M. Hamelik, James C. S. Wood