Patents by Inventor Kevin Andrew DiGregorio

Kevin Andrew DiGregorio 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).

  • Selective hydrolysis of saturated esters over unsaturated esters using enzymes
    Patent number: 5856150
    Abstract: Processes are disclosed for the selective hydrolysis of saturated esters, e.g., ethyl propionate, over unsaturated esters, e.g., ethyl acrylate, using enzymes, e.g., lipases. The processes are useful, for example, for removing undesired esters from monomer feeds used in latex polymerization and from the latexes after polymerization. The processes can be used, for example, to treat latexes used in hair fixative compositions to remove unpleasant odors.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: January 5, 1999
    Assignee: Amerchol Corporation
    Inventors: Kevin Andrew DiGregorio, James Charles Hatfield, George Ernest Keller