Patents by Inventor Ernest Kenneth Hammond

Ernest Kenneth Hammond 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).

  • Doors
    Patent number: 6962031
    Abstract: A door comprises a framework formed from lengths of pultruded synthetic material having a low coefficient of thermal expansion, the space defined by the framework may be at least partially occupied by a core comprising a body of synthetic, structural-density, foam material and skins may be secured to opposed faces thereof to leave edges of the framework exposed.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: November 8, 2005
    Assignee: Polymer Doors Limited
    Inventors: Nicholas Guy Clarke, Ernest Kenneth Hammond
  • Doors
    Publication number: 20020108337
    Abstract: A door comprises a framework formed from lengths of pultruded synthetic material having a low coefficient of thermal expansion, the space defined by the framework may be at least partially occupied by a core comprising a body of synthetic, structural-density, foam material and skins may be secured to opposed faces thereof to leave edges of the framework exposed.
    Type: Application
    Filed: January 11, 2002
    Publication date: August 15, 2002
    Inventors: Nicholas Guy Clarke, Ernest Kenneth Hammond