Patents Assigned to Low Emmissions Technologies Research and Development Partnership
  • Nitrogen oxide adsorbing material
    Patent number: 5795553
    Abstract: A material effective for adsorbing NO.sub.x from an exhaust stream of a combustion process, such as from an internal combustion engine operating under lean burn conditions, is disclosed. The material comprises an alkali metal-doped and copper-doped hydrous metal oxide material that has been calcined. The alkali metal is selected from potassium and sodium. The material is coated onto a substrate, such as ceramic beads or pellets, or a honeycomb cordierite monolith, and placed in contact with the exhaust stream.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: August 18, 1998
    Assignee: Low Emmissions Technologies Research and Development Partnership
    Inventors: Stephen E. Lott, Timothy J. Gardner, Linda I. McLaughlin, John B. Oelfke, Charlene A. Matlock