The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2012
Filed:
May. 24, 2005
Applicants:
Peter James Branton, Southampton, GB;
Stephen John Roberts, Weltevreden Park, ZA;
Elma Van Der Lingen, Johannesburg, ZA;
Inventors:
Peter James Branton, Southampton, GB;
Stephen John Roberts, Weltevreden Park, ZA;
Elma van der Lingen, Johannesburg, ZA;
Assignee:
British American Tobacco (Investments) Limited, London, GB;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A24B 15/18 (2006.01);
U.S. Cl.
CPC ...
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 (TiO, ZnO, ZnAlOor CuZnO). The gold preferably comprises species in the metallic state)(Au), together with species in an oxidized state (Au).