Patents by Inventor David Watkin Price

David Watkin Price 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).

  • Lute
    Patent number: 4111709
    Abstract: A lute for coke ovens and the like is of clay-like consistency and contains a blowing agent which produces gas at least within the temperature range 160.degree. to 290.degree. C, and can appreciably cut pollution.
    Type: Grant
    Filed: February 1, 1978
    Date of Patent: September 5, 1978
    Assignee: Coal Industry (Patents) Limited
    Inventors: David Watkin Price, Newton John Hodges, Robert Furley
  • Extraction of coal
    Patent number: 4101413
    Abstract: Coal can be extracted with high boiling aromatic oils produced by extracting the aromatic constituents of a heavy petroleum material, e.g. a bitumen residue, using a selective solvent, mixing the extract with a low-boiling aromatic solvent, adding water and separating the aromatic-containing phase and recovering said aromatic constituents. The resulting coal extract is particularly suitable for the production of electrode coke.
    Type: Grant
    Filed: February 23, 1977
    Date of Patent: July 18, 1978
    Assignee: Coal Industry (Patents) Limited
    Inventors: William Derek Jones, Geoffrey Michael Kimber, James McLaren, David Watkin Price
  • Damp proof compositions
    Patent number: 4080350
    Abstract: The invention discloses a novel damp proof composition, suitable for making into sheets for roofing purposes, comprising (a) from 5 to 40% of a polychloroprene rubber, (b) pitch in an amount of up to 45%, and (c) at least 5% of a filler. The filler may be particulate or fibrous, and the composition may further include a supplementary polymer, for instance a nitrile rubber.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: March 21, 1978
    Assignee: Coal Industry (Patents) Limited
    Inventors: Murray George Briscoe, Ronald Sidebottom, John Edwin Latham Smith, David Brian George, David Watkin Price