Patents by Inventor Robert Weggelaar

Robert Weggelaar 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).

  • Polyurethane foam for use as soil improver
    Patent number: 9988575
    Abstract: Polyurethane foam flakes for use as additive to soil and/or other natural plant growth media for improving the water retention and/or reduction of the methane emission.
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: June 5, 2018
    Assignee: HUNTSMAN INTERNATIONAL LLC
    Inventors: Annelies Vandevelde, Herman Eugene Germain Moureau, Fabio Invernizzi, Robert Weggelaar
  • Composite panel
    Patent number: 9987776
    Abstract: Composite panel which comprises a layer of foamed material having a density of less than 100 kg/m3 which layer is sandwiched between 2 layers of fiber reinforced polyisocyanurate material.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: June 5, 2018
    Assignee: HUNTSMAN INTERNATIONAL LLC
    Inventors: Mervyn Laycock, Jan Christiaan Stevens, Luc Van Essche, Robert Weggelaar
  • Polyurethane Foam For Use as Soil Improver
    Publication number: 20160115387
    Abstract: Polyurethane foam flakes for use as additive to soil and/or other natural plant growth media for improving the water retention and/or reduction of the methane emission.
    Type: Application
    Filed: May 26, 2014
    Publication date: April 28, 2016
    Inventors: Annelies Vandevelde, Herman Eugene Germain Moureau, Fabio Invernizzi, Robert Weggelaar
  • COMPOSITE PANEL
    Publication number: 20090324932
    Abstract: Composite panel which comprises a layer of foamed material having a density of less than 100 kg/m3 which layer is sandwiched between 2 layers of fiber reinforced polyisocyanurate material.
    Type: Application
    Filed: June 5, 2007
    Publication date: December 31, 2009
    Applicant: Huntsman International LLC
    Inventors: Mervyn Laycock, Jan Christiaan Stevens, Luc Van Essche, Robert Weggelaar