Patents by Inventor Thierry Leprince

Thierry Leprince 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).

  • Catalyst system for generating carbon monoxide for use with automotive catalysts
    Patent number: 7160832
    Abstract: The present invention provides a catalyst system that may be used to regenerate NOx adsorber catalysts. It also provides methods for using these catalysts. According to the present invention, hydrocarbons are introduced into an exhaust gas stream upstream of a metal ion exchanged zeolite catalyst to generate CO. The metal ion exchanged zeolite catalyst is preferably a Cu-ZSM-5 catalyst that has a high loading of copper. The hydrocarbons are oxidized to carbon monoxide, and the carbon monoxide is then exposed to a NOx adsorber catalyst, which facilitates regeneration of that catalyst.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: January 9, 2007
    Assignee: Umicore AG & Co. KG
    Inventors: Mark Crocker, Thierry Leprince, Takeshi Matsumoto, Takuji Nakaene
  • Catalyst system for generating carbon monoxide for use with automotive catalysts
    Publication number: 20040254062
    Abstract: The present invention provides a catalyst system that may be used to regenerate NOx adsorber catalysts. It also provides methods for using these catalysts. According to the present invention, hydrocarbons are introduced into an exhaust gas stream upstream of a metal ion exchanged zeolite catalyst to generate CO. The metal ion exchanged zeolite catalyst is preferably a Cu-ZSM-5 catalyst that has a high loading of copper. The hydrocarbons are oxidized to carbon monoxide, and the carbon monoxide is then exposed to a NOx adsorber catalyst, which facilitates regeneration of that catalyst.
    Type: Application
    Filed: June 16, 2003
    Publication date: December 16, 2004
    Inventors: Mark Crocker, Thierry Leprince, Takeshi Matsumoto, Takuji Nakaene
  • Method for increasing internal combustion engine exhaust gas catalyst durability
    Publication number: 20020162319
    Abstract: Durability of emissions catalysts in vehicular and other emissions control systems is significantly increased by positioning, prior to the catalyst-laden catalytic converter, at least one poison trap consisting of a low back pressure structure having a coating which reacts with non-metal or amphoteric oxides to form non-volatile reaction products.
    Type: Application
    Filed: May 3, 2001
    Publication date: November 7, 2002
    Inventors: Mark Crocker, Gregory Thomas Garr, Thierry Leprince