Patents by Inventor Kristine M. Bartosiak

Kristine M. Bartosiak 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).

  • Expandable polypropylene interpolymer particles
    Patent number: 4647593
    Abstract: A process for producing a polypropylene-polystyrene interpolymer which can be impregnated with a blowing agent and can then be expanded under normal conditions for polystyrene particles to low density, fine cell structure foams. The interpolymer is viscbroken during the polymerization of the styrene. The polypropylene is lubricated prior to formation of the interpolymer. The process forms particles which can be impregnated with blowing agent directly.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: March 3, 1987
    Assignee: Atlantic Richfield Company
    Inventors: Kristine M. Bartosiak, Michael W. Knauff