Patents by Inventor David G. Knight

David G. Knight 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).

  • Oxidation of NOx's with chlorine dioxide in combination with a thermal NOx removal process
    Publication number: 20040131523
    Abstract: A process for reducing NOx concentrations in waste gas streams by contacting the waste gas stream with a reducing agent selected from ammonia and urea and then oxidizing the lower NOx's present in the waste gas streams to higher oxides with chlorine dioxide.
    Type: Application
    Filed: May 1, 2003
    Publication date: July 8, 2004
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Theresa J. Takacs, Robert G. Balmer, Boyd E. Hurst, William J. McLaughlin, David G. Knight, John D. Cunic, Henry Shaw, Chen-Lu Yang, Pin Gu
  • Selective non-catalytic reduction of NOx
    Publication number: 20040022708
    Abstract: A reducing agent and a readily-oxidizable gas are injected into a NOx-containing process stream to reduce the concentration of the NOx-containing process stream by a predetermined amount.
    Type: Application
    Filed: May 1, 2003
    Publication date: February 5, 2004
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Boyd E. Hurst, William J. McLaughlin, David G. Knight, Theresa J. Takacs
  • Oxidation of NOx's with sodium chlorite in combination with a thermal NOx removal process
    Publication number: 20040022707
    Abstract: A process for reducing NOx concentrations in waste gas streams by contacting the waste gas stream with a reducing agent selected from ammonia and urea and then oxidizing the lower NOx's present in the waste gas streams to higher oxides with sodium chlorite.
    Type: Application
    Filed: May 1, 2003
    Publication date: February 5, 2004
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Theresa J. Takacs, Robert G. Balmer, Boyd E. Hurst, William J. McLaughlin, David G. Knight, John D. Cunic, Henry Shaw, Chen-Lu Yang, Pin Gu
  • Method of heat treating ferrous metal articles under controlled furnace atmospheres
    Patent number: 4386972
    Abstract: Method of generating furnace atmospheres and processes for using the atmospheres for carburizing, decarburizing, neutral hardening, annealing or carbonitriding ferrous base metals.The invention is characterized by forming atmospheres that are a mixture of an oxygen-bearing medium comprising oxygen or a gaseous compound containing oxygen in combination with hydrogen and carbon, a gaseous source of hydrocarbon and an inert gas carrier forming the major component of the mixture. Gaseous ammonia can be substituted for a portion of the inert gas carrier to provide an atmosphere suitable for carbonitriding ferrous base metals.The normally gaseous mixture is prepared outside of the furnace and then injected into the furnace where reaction of the mixture produces the desired furnace atmosphere.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: June 7, 1983
    Assignee: Air Products and Chemicals, Inc.
    Inventor: David G. Knight