Patents by Inventor Daniel R. Mishell

Daniel R. Mishell 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).

  • Non-contaminating direct serum assay of steroid hormones
    Patent number: 4477577
    Abstract: A method for direct serum assay of steroid hormones wherein the competition from binding protein, having an affinity for complexing with the steroid hormones, is significantly eliminated by adding to the serum an artificial compound which has a greater or equal affinity for the binding protein than do the steroid hormones, and which is not immuno-reactive with the steroid hormones. Because the compound is artificial, it is non-contaminating. Levonorgestrel and norethindrone as such compounds are disclosed.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: October 16, 1984
    Assignee: University of Southern California
    Inventors: Robert M. Nakamura, Daniel R. Mishell, Paul G. Stumpf