Patents by Inventor Jan Peter Keulen

Jan Peter Keulen 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).

  • ELECTRICALLY CONDUCTIVE COMPOSITIONS AND METHOD OF MANUFACTURE THEREOF
    Publication number: 20090057621
    Abstract: Disclosed herein is a method of manufacturing an electrically conductive composition comprising reducing the viscosity of a molten masterbatch to form a reduced viscosity molten masterbatch; and mixing the reduced viscosity molten masterbatch with a polymer to form the electrically conductive composition. Disclosed herein too is a method of manufacturing an electrically conductive composition comprising mixing a molten masterbatch with a first polymer in a first extruder, wherein the first polymer has a melt viscosity that is lower than the melt viscosity of the molten masterbatch; reducing the melt viscosity of the molten masterbatch to form a reduced viscosity molten masterbatch; and mixing the reduced viscosity molten masterbatch with a second polymer in a second extruder to form the electrically conductive composition.
    Type: Application
    Filed: September 9, 2008
    Publication date: March 5, 2009
    Applicant: SABIC INNOVATIVE PLASTICS
    Inventors: Jan Peter Keulen, Christiaan Henricus Johannes Koevoets
  • Electrically conductive compositions and method of manufacture thereof
    Patent number: 7462656
    Abstract: Disclosed herein is a method of manufacturing an electrically conductive composition comprising reducing the viscosity of a molten masterbatch to form a reduced viscosity molten masterbatch; and mixing the reduced viscosity molten masterbatch with a polymer to form the electrically conductive composition. Disclosed herein too is a method of manufacturing an electrically conductive composition comprising mixing a molten masterbatch with a first polymer in a first extruder, wherein the first polymer has a melt viscosity that is lower than the melt viscosity of the molten masterbatch; reducing the melt viscosity of the molten masterbatch to form a reduced viscosity molten masterbatch; and mixing the reduced viscosity molten masterbatch with a second polymer in a second extruder to form the electrically conductive composition.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: December 9, 2008
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Jan Peter Keulen, Christiaan Henricus Johannes Koevoets