Patents Represented by Attorney D. W. Sullivan

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  • TiO.sub.2 light scattering efficiency when incorporated in coatings
    Patent number: 5650002
    Abstract: A TiO.sub.2 pigment particle having a surface coating of inorganic particles or mineral particles exhibiting improved light scattering efficiency of TiO.sub.2 at a moderate to high pigment volume concentration (PVC) and a low oil absorption when incorporated in coatings applications is disclosed, and methods of accomplishing the same.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: July 22, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John Davis Bolt
  • Process for treating metal chlorides
    Patent number: 5624490
    Abstract: A process for preparing high strength, rock-like, water-resistant aggregates by high intensity mixing of acidic metal chlorides and alkaline/cementitious materials in the presence of a low water ratio wherein the metal chlorides are simultaneously neutralized/stabilized and the mixture is solidified.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: April 29, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Peter Hill, Michael T. Hyzny, John F. Wehner