Patents by Inventor John Edwin Latham Smith

John Edwin Latham Smith 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).

  • 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