Patents by Inventor Justin Leonard Krieger

Justin Leonard Krieger 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).

  • Multiple riser reactor with centralized catalyst return
    Patent number: 7385099
    Abstract: The present invention is directed to a hydrocarbon conversion apparatus and process. The apparatus comprises the following: a plurality of riser reactors, each having a first end into which a catalyst is fed, a second end through which the catalyst can exit, and optionally a center axis extending therebetween. The apparatus also includes a separation zone having a plurality of inlets, each inlet not being oriented along the center axes of the riser reactors, the separation zone being provided to separate the catalyst from products of a reaction conducted in the hydrocarbon conversion apparatus. A plurality of deviating members are also provided, each deviating member being in fluid communication between the second end of a respective riser reactor and a respective inlet of the separation zone. The apparatus also includes a catalyst retention zone provided to contain catalyst, which is fed to the riser reactors.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: June 10, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Keith Holroyd Kuechler, James R. Lattner, Nicolas P. Coute, Jeffrey S. Smith, Justin Leonard Krieger
  • Multiple riser reactor with centralized catalyst return
    Patent number: 7083762
    Abstract: The present invention is directed to a hydrocarbon conversion apparatus and process. The apparatus comprises the following: a plurality of riser reactors, each having a first end into which a catalyst is fed, a second end through which the catalyst can exit, and optionally a center axis extending therebetween. The apparatus also includes a separation zone having a plurality of inlets, each inlet not being oriented along the center axes of the riser reactors, the separation zone being provided to separate the catalyst from products of a reaction conducted in the hydrocarbon conversion apparatus. A plurality of deviating members are also provided, each deviating member being in fluid communication between the second end of a respective riser reactor and a respective inlet of the separation zone. The apparatus also includes a catalyst retention zone provided to contain catalyst, which is fed to the riser reactors.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: August 1, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Keith Holroyd Kuechler, James R. Lattner, Nicolas P. Coute, Jeffrey S. Smith, Justin Leonard Krieger
  • Multiple riser reactor with centralized catalyst return
    Publication number: 20040076554
    Abstract: The present invention is directed to a hydrocarbon conversion apparatus and process. The apparatus comprises the following: a plurality of riser reactors, each having a first end into which a catalyst is fed, a second end through which the catalyst can exit, and optionally a center axis extending therebetween. The apparatus also includes a separation zone having a plurality of inlets, each inlet not being oriented along the center axes of the riser reactors, the separation zone being provided to separate the catalyst from products of a reaction conducted in the hydrocarbon conversion apparatus. A plurality of deviating members are also provided, each deviating member being in fluid communication between the second end of a respective riser reactor and a respective inlet of the separation zone. The apparatus also includes a catalyst retention zone provided to contain catalyst, which is fed to the riser reactors.
    Type: Application
    Filed: January 8, 2003
    Publication date: April 22, 2004
    Inventors: Keith Holroyd Kuechler, James R. Lattner, Nicolas P. Coute, Jeffrey S. Smith, Justin Leonard Krieger