Patents Examined by Morris O. Volk
  • Apparatus for purifying exhaust waste gases
    Patent number: 3969082
    Abstract: An apparatus for purifying exhaust waste gases including a catalytic element comprising a substrate of metal carrying a surface layer compatible with and supporting a coating of catalytic material, a major proportion of the surface coating of catalytic material comprising an unagglomerated atomic dispersion. An example of such a substrate is an aluminum bearing ferritic steel which has been heat treated in air to form an essentially alumina surface layer.
    Type: Grant
    Filed: July 2, 1973
    Date of Patent: July 13, 1976
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: James Anthony Cairns, Richard Stuart Nelson, Stanley Frederick Pugh