Patents by Inventor Samuel J. Chester

Samuel J. Chester 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).

  • Immunoassay for the detection of human colon cancer using a polyclonal antibody derived from a capillary culture of tumor cells
    Patent number: 4687734
    Abstract: A procedure for detecting malignancy includes culturing human colon tumor cells in a capillary system. A rabbit is immunized with byproducts of the culture. An antibody produced in the rabbit is labeled with .sup.125 I using lactoperoxidase according to a known method. Blood samples are drawn from a being to be tested. The drawn blood is processed to produce serum. The immune complexes are removed from the serum with purified protein A from the Staphlococcus Aureus Cowan strain. The removed immunocomplexes are dissociated with 0.2M glycene/HCl pH 2.8. The labeled antibody is combined with the antigen component of the immunocomplex to produce a new labeled immunocomplex. The newly formed immunocomplex is precipitated with PEG 6000. The newly formed labeled immunocomplexes are counted in a gamma auto counter.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: August 18, 1987
    Inventor: Samuel J. Chester