Patents by Inventor Elma van der Lingen

Elma van der Lingen 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).

  • Smoking articles and smoking materials
    Patent number: 8104484
    Abstract: A smoking article such as a cigarette, or a smoke filter or other component thereof, comprises a catalyst for the oxidation of carbon monoxide to carbon dioxide. The catalyst comprises gold, and an oxide of zinc or titanium. Titania and mixed oxides of zinc and copper or aluminum are preferred (TiO2, ZnO, ZnAlOx or CuZnOx). The gold preferably comprises species in the metallic state)(Au0), together with species in an oxidized state (Au?+).
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: January 31, 2012
    Assignee: British American Tobacco (Investments) Limited
    Inventors: Peter James Branton, Stephen John Roberts, Elma van der Lingen
  • Smoking Articles and Smoking Materials
    Publication number: 20070215166
    Abstract: A smoking article such as a cigarette, or a smoke filter (3) or other component thereof, comprises a catalyst (3b) for the oxidation of carbon monoxide to carbon dioxide. The catalyst (3b) comprises gold, and an oxide of zinc or titanium. Titania and mixed oxides of zinc and copper or aluminium are preferred (TiO2, ZnO, ZnAlOx or CuZnOx). The gold preferably comprises species in the metallic state (Au0), together with species in an oxiddise state (Au?+).
    Type: Application
    Filed: May 24, 2005
    Publication date: September 20, 2007
    Inventors: Peter Branton, Stephen Roberts, Elma van der Lingen