Patents by Inventor Juleen A. Mitchell

Juleen A. Mitchell 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 for processing fluids
    Patent number: 4775629
    Abstract: A cartridge is formed of two parts which form an outlet valve at the lower end. The valve is opened or closed by relative rotation of the parts.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: October 4, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ernest B. Kuhl, George R. Long, Juleen A. Mitchell, Richard S. Jenkins, Henry R. Wolfe, Jr., Gerard F. Malone