Patents by Inventor Roger Albert Castro

Roger Albert Castro 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).

  • Method for simultaneously casting sheets on blocks of cellular polymeric material
    Patent number: 3954924
    Abstract: Sheets of cellular polymeric material are cast from a water-in-oil emulsion in a mould subdivided by one or more partitions.
    Type: Grant
    Filed: May 31, 1973
    Date of Patent: May 4, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Roger Albert Castro, Richard John Orman, James Ernest Ryan