Patents by Inventor David Christeller

David Christeller 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 and apparatus for enhancing the rate and efficiency of gas phase reactions
    Patent number: 6357223
    Abstract: An apparatus and a method for enhancing the rate of a chemical reaction in a gas stream. The apparatus includes at least one heterogeneous catalyst having an upstream end and a downstream end, and at least one surface having a plurality of catalytically active sites on the surface, where the catalyst is positioned so that at least a portion of the gas stream contacts at least a portion of the catalytically active sites on the surface. At least one device for producing radicals or other active species from at least one of water vapor or other gaseous species, such as a corona discharge device or a UV light source is used to produce radicals or other active species, which are introduced into the gas stream at a position upstream of the downstream end of the catalyst.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: March 19, 2002
    Assignee: Litex, Inc.
    Inventors: Robert P. Caren, David Christeller, Jack A. Ekchian
  • Method and apparatus for enhancing the rate and efficiency of gas phase reactions
    Patent number: 6047543
    Abstract: An apparatus and a method for enhancing the rate of a chemical reaction in a gas stream. The apparatus includes at least one heterogeneous catalyst having an upstream end and a downstream end, and at least one surface having a plurality of catalytically active sites on the surface, where the catalyst is positioned so that at least a portion of the gas stream contacts at least a portion of the catalytically active sites on the surface. At least one device for producing radicals or other active species from at least one of water vapor or other gaseous species, such as a corona discharge device or a UV light source is used to produce radicals or other active species, which are introduced into the gas stream at a position upstream of the downstream end of the catalyst.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: April 11, 2000
    Assignee: Litex, Inc.
    Inventors: Robert P. Caren, David Christeller, Jack A. Ekchian