Patents by Inventor Dennis Charlton Allport

Dennis Charlton Allport 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).

  • Laminates
    Patent number: 4025687
    Abstract: A laminated panel having improved fire resistance comprising a core of rigid isocyanurate based foam sandwiched between two facing sheets, characterized in that there is embedded within the foam core a binding material; the whole being bonded together by the foam core into a unitary construction.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: May 24, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: Alan Metcalf Wooler, Dennis Charlton Allport
  • Laminates
    Patent number: 4024310
    Abstract: A laminated panel having improved fire resistance comprising a core of rigid isocyanurate based foam sandwiched between two facing sheets, characterized in that at least one of the facing sheets has an adherent layer of intumescent material applied to its inner surface; the whole being bonded together by the foam core into a unitary construction.In a further embodiment of the invention there is embedded within the foam core a binding material.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: May 17, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: Alan Metcalf Wooler, Dennis Charlton Allport