Patents by Inventor Linda I. McLaughlin

Linda I. McLaughlin 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).

  • Method for selective catalytic reduction of nitrogen oxides
    Patent number: 6855303
    Abstract: A method for catalytically reducing nitrogen oxide compounds (NOx, defined as nitric oxide, NO, +nitrogen dioxide, NO2) in a gas by a material comprising a base metal consisting essentially of CuO and Mn, and oxides of Mn, on an activated metal hydrous metal oxide support, such as HMO:Si. A promoter, such as tungsten oxide or molybdenum oxide, can be added and has been shown to increase conversion efficiency. This method provides good conversion of NOx to N2, good selectivity, good durability, resistance to SO2 aging and low toxicity compared with methods utilizing vanadia-based catalysts.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: February 15, 2005
    Assignee: Sandia Corporation
    Inventors: Deborah L. Mowery-Evans, Timothy J. Gardner, Linda I. McLaughlin
  • Material and system for catalytic reduction of nitrogen oxide in an exhaust stream of a combustion process
    Patent number: 6165934
    Abstract: Disclosed is a catalytic material of a calcined noble metal-doped hydrous titanium oxide with a copper promoter compound. The catalytic material is effective for NO.sub.x reduction in an oxidizing exhaust stream form a combustion process is disclosed. Also described is a device for reduction of nitrogen oxides in an exhaust stream, particularly an automotive exhaust stream, that includes a substrate coated with the activated noble-metal doped hydrous metal oxide of the invention and methods for preparing the device.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: December 26, 2000
    Assignee: Low Emissions Technologies Research and Development Partnership
    Inventors: Timothy J. Gardner, Stephen E. Lott, Steven J. Lockwood, Linda I. McLaughlin
  • Material and system for catalytic reduction of nitrogen oxide in an exhaust stream of a combustion process
    Patent number: 5830421
    Abstract: A catalytic material of activated hydrous metal oxide doped with platinum, palladium, or a combination of these, and optionally containing an alkali or alkaline earth metal, that is effective for NO.sub.X reduction in an oxidizing exhaust stream from a combustion process is disclosed. A device for reduction of nitrogen oxides in an exhaust stream, particularly an automotive exhaust stream, the device having a substrate coated with the activated noble-metal doped hydrous metal oxide of the invention is also provided.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: November 3, 1998
    Assignee: Low Emissions Technologies Research and Development Partnership
    Inventors: Timothy J. Gardner, Stephen E. Lott, Steven J. Lockwood, Linda I. McLaughlin
  • 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