Patents by Inventor Glenn R. Welch

Glenn R. Welch 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).

  • Flow cytometry nozzle for high efficiency cell sorting
    Patent number: 5985216
    Abstract: A sorting nozzle having two tapered zones with elliptical cross-sections is able to orient and sort a large fraction of asymmetrical or "flattened" cells. This nozzle has particular application for sorting viable male (Y) and female (X) sperm populations in a cell sorter.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: November 16, 1999
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventors: Willem Rens, Glenn R. Welch, Lawrence A. Johnson