Patents by Inventor ANDRE SCHEELEN

ANDRE SCHEELEN 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).

  • Polyethylene pipe
    Publication number: 20040103948
    Abstract: Multi-layered pipe comprising a main layer of polyethylene compound having a resistance to stress cracking NPT measured according to ISO 13479 standard of less than 8000 hours and an internal layer of polyethylene compound having a resistance to stress cracking NPT of higher than 8000 hours, the thickness of the internal layer being between 1 and 25% of the total pipe thickness but not less than 0.3 mm.
    Type: Application
    Filed: April 17, 2003
    Publication date: June 3, 2004
    Inventors: Andre Scheelen, Eric Vandevijver
  • POLYETHYLENE-BASED COMPOSITION AND PROCESS FOR THE MANUFACTURE OF ARTICLES SHAPED FROM THE COMPOSITION
    Publication number: 20020006486
    Abstract: Polyethylene-based composition for which the standard density, measured at 23° C. according to ASTM Standard D 792, is greater than 940 kg/m3 and which comprises talc in an amount of less than 1 part per 100 parts by weight of polyethylene. The composition is preferably in the form of extruded granules. It exhibits a markedly improved creep resistance.
    Type: Application
    Filed: July 14, 1998
    Publication date: January 17, 2002
    Inventors: ANDRE SCHEELEN, WIM COPPENS