Patents by Inventor Bernard John Cross

Bernard John Cross 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).

  • Foamed articles of styrenic and acrylic polymers blend
    Patent number: 6063485
    Abstract: Foamed articles having a closed cell structure formed from a polymer blend comprising at least 50% by weight of a styrenic polymer and up to 50% by weight of an acrylic polymer which has an average molecular weight which is less than 90% of that of the styrenic polymer which are significantly less dense than such articles prepared from the styrenic polymer alone.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: May 16, 2000
    Assignee: Imperial Chemical Industies PLC
    Inventors: Peter John Smith, Bernard John Cross
  • Foamed articles
    Patent number: 5985946
    Abstract: A foamed article having a closed cell structure formed from: (i) a polymer blend comprising at least 80% by weight of a styrenic polymer and up to 20% by weight of an acrylic polymer; and (ii) gaseous carbon dioxide blowing agent.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: November 16, 1999
    Assignee: Imperial Chemical Industries PLC
    Inventors: Peter John Smith, Bernard John Cross
  • Foaming method
    Patent number: 5898039
    Abstract: A process for forming a foamed article having a closed cell structure without the need to use a halogenated blowing agent. In the process, a polymer blend comprising at least 50% by weight of a styrenic polymer and up to 50% by weight of an acrylic polymer which has an average molecular weight which is less than 90% of that of the styrenic polymer and a hydrocarbon blowing agent are supplied to a heated extruder where the blend is formed and the blowing agent incorporated to form a molten mixture from which the foamed article is formed on release from the extruder.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: April 27, 1999
    Assignee: Imperial Chemical Industries PLC
    Inventors: Peter John Smith, Bernard John Cross