Patents by Inventor Clifford Bruce Pollitt

Clifford Bruce Pollitt 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).

  • Tiles and floor surfaces
    Patent number: 6122890
    Abstract: A method of forming a tiled floor without adhesive beneath the tiles comprises laying the tiles, applying filler between adjacent tiles after laying, and holding the tiles in relative position. A flexible sheet with apertures can be laid on a substrate and the apertures filled with grouting material and the tiles laid on the sheet, the spaces between the tiles receiving filler material. The tiles may have a groove in peripheral sides to provide a keying effect for the filler material. The filler material may be settable after application and hold the tiles in position.
    Type: Grant
    Filed: February 11, 1998
    Date of Patent: September 26, 2000
    Assignee: Cairn Holdings (UK) Limited
    Inventor: Clifford Bruce Pollitt