Patents by Inventor Mireille Berthine Albert De Witte

Mireille Berthine Albert De Witte 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).

  • Process for preparing a flexible polyurethane foam
    Patent number: 5900441
    Abstract: Process for preparing a flexible foam by reacting a polyisocyanate composition having an NCO value of 11-24% by weight with an isocyanate-reactive compound having a number average molecular weight of 1000-12000 using water as blowing agent.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: May 4, 1999
    Assignee: Imperial Chemical Industries PLC
    Inventors: Mireille Berthine Albert De Witte, Eric Huygens, Luc Van Essche, Leo Franciscus Verstrepen
  • Recycling of flexible foam
    Patent number: 5691389
    Abstract: Process for recycling flexible foams by glycolysis and extraction. The glycolysis is conducted by allowing the foam to react with low molecular weight polyols, then allowing the mixture to separate in two phases.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: November 25, 1997
    Assignee: Imperial Chemical Industries PLC
    Inventors: Giovanni Parrinello, David Thorpe, Gabriel Verhelst, Julian Francis George Hopper, Mireille Berthine Albert De Witte