Patents by Inventor Leonardus Jacobus Johannus Welzen

Leonardus Jacobus Johannus Welzen 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).

  • Flexible sheet, method of manufacturing said sheet and applications thereof
    Patent number: 9757927
    Abstract: The invention relates to a flexible sheet comprising (i) a woven fabric comprising yarns containing polyethylene fibers; and (ii) a plastomer layer adhered to at least one surface of said woven fabric wherein said plastomer is a semi-crystalline copolymer of ethylene or propylene and one or more C2 to C12 ?-olefin co-monomers and wherein said plastomer having a density as measured according to ISO1183 of between 870 and 930 kg/m3, wherein the flexible sheet has a shrinkage of at most 1.9%.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: September 12, 2017
    Assignee: DSM IP ASSETS B.V.
    Inventors: Dietrich Wienke, Roelof Marissen, Martinus Johannes Nicolaas Jacobs, Wilheimus Gerardus Marie Bruls, Francois Antoine Marie Op Den Buijsch, Leonardus Jacobus Johannus Welzen
  • FLEXIBLE SHEET, METHOD OF MANUFACTURING SAID SHEET AND APPLICATIONS THEREOF
    Publication number: 20120264343
    Abstract: The invention relates to a flexible sheet comprising (i) a woven fabric comprising yarns containing polyethylene fibers; and (ii) a plastomer layer adhered to at least one surface of said woven fabric wherein said plastomer is a semi-crystalline copolymer of ethylene or propylene and one or more C2 to C12 ?-olefin co-monomers and wherein said plastomer having a density as measured according to ISO1183 of between 870 and 930 kg/m3, wherein the flexible sheet has a shrinkage of at most 1.9%.
    Type: Application
    Filed: October 12, 2010
    Publication date: October 18, 2012
    Inventors: Dietrich Wienke, Roelof Marissen, Martinus Johannes Nicolaas Jacobs, Wilheimus Gerardus Marie Bruls, Francois Antoine Marie Op Den Buijsch, Leonardus Jacobus Johannus Welzen