Patents by Inventor Keith Christian Andersen

Keith Christian Andersen 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).

  • STARCH PURGING MATERIAL
    Publication number: 20110094540
    Abstract: A method is provided for cleaning the interior of polymer processing equipment having a resin composition retained therein, wherein a contaminant material is adhered to at least a portion of the interior surface of the polymer processing equipment. The method comprises the steps of: charging the polymer processing equipment having a residual polymer composition retained in the interior thereof with a purging composition comprising 45-94 weight % of starch; 0.
    Type: Application
    Filed: October 7, 2010
    Publication date: April 28, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Peter A. Morken, Karlheinz Hausmann, Keith Christian Andersen, Michael Joseph Molitor, Mark D. Allen, Thomas E. Lovelace
  • Composition comprising ionomer and polyamide
    Patent number: 7144938
    Abstract: A composition and an article made from the composition are disclosed. The composition comprises, or is produced from, an ionomer, a polyamide, and one or more esters of montanic acid. The article includes film, sheet, filament, tape, molded part, thermoformed product, and container for food or non-food packaging, or combinations of two or more thereof.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: December 5, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Stewart Carl Feinberg, Charles J. Talkowski, Keith Christian Andersen