Patents by Inventor Kenneth Critchley

Kenneth Critchley 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).

  • Patent number: 4301634
    Abstract: An assembly of glazed ceramic tiles for the interior walls and ceilings each tile comprising a glazed body with glazed spacing lugs on all four sides of the tile at least two of the glazed lugs on two sides extending substantially the full length of the sides and two glazed lugs on the other two sides extending substantially the full length of the sides or two shorter glazed lugs symmetrically arranged thereon one of each of the shorter lugs being longer than the other, all the glazed lugs on all the sides when assembled engaging glazed lugs on adjacent sides.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: November 24, 1981
    Assignee: Pilkington's Tiles Limited
    Inventors: John W. Shore, James H. Eyres, Kenneth Critchley