Patents by Inventor Daniel Vargo

Daniel Vargo 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).

  • Dispersant viscosity modifiers based on maleic anhydride-styrene copolymers
    Patent number: 8168574
    Abstract: An interpolymer composition comprising monomer-derived units of (i) at least one of an aliphatic olefin containing from 2 to 30 carbon atoms and a vinyl aromatic monomer, and (ii) at least one alpha, beta-unsaturated acylating agent; wherein a portion of said acylating agent monomers is esterified and wherein a portion of said acylating agent monomers is condensed with at least one aromatic amine, provides good viscosity modification and dispersancy performance.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: May 1, 2012
    Assignee: The Lubrizol Corporation
    Inventors: Daniel Visger, Daniel Vargo, Barton Schober, Suzanne Patterson, Patrick E Mosier, Christopher Friend, John Pudelski, Michael J Covitch, Calvin James, David Price, Leonard E Orzech