Patents by Inventor Anthony J. Ewell

Anthony J. Ewell 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).

  • Cesium trifluoroacetate solutions for the isolation of nucleic acids
    Patent number: 4482482
    Abstract: A method for simultaneously isolating DNA, RNA and/or protein fractions from a crude biological mixture containing DNA, RNA and/or protein fractions is disclosed. The method comprises adding the crude biological mixture to an aqueous solution of cesium trifluoroacetate, the solution having a density from about 1.4 to about 1.6 g/ml, and centrifuging the resulting mixture under ultracentrifugation conditions.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: November 13, 1984
    Assignee: Pharmacia, Inc.
    Inventors: Lawrence A. Haff, Anthony J. Ewell