Patents by Inventor Steven A. Lottes

Steven A. Lottes 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).

  • Publication number: 20030188475
    Abstract: A dynamic, compact, lightweight fuel processor that is capable of converting carbonaceous fuels to hydrogen rich gases suitable for all types of fuel cells or chemical processing applications. The fuel processor and process are based on the autothermal hydrodesulfurizing reforming reaction, followed by clean up of byproduct sulfur-containing gases and carbon monoxide that poison the fuel cell electrocatalyst. The fuel processor uses proprietary catalysts and hardware designs that enable the conversion in an energy efficient manner while maintaining desirable performance characteristics such as rapid start-stop and fast response to load change capabilities.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 9, 2003
    Inventors: Shabbir Ahmed, Sheldon H. Lee, Steven G. Calderone, Richard L. Kao, Elias H. Camara, Steven A. Lottes, Michael Krumpelt, Todd L. Harvey
  • Patent number: 6013172
    Abstract: A methodology provides for the extraction of local chemical kinetic model constants for use in a reacting flow computational fluid dynamics (CFD) computer code with chemical kinetic computations to optimize the operating conditions or design of the system, including retrofit design improvements to existing systems. The coupled CFD and kinetic computer code are used in combination with data obtained from a matrix of experimental tests to extract the kinetic constants. Local fluid dynamic effects are implicitly included in the extracted local kinetic constants for each particular application system to which the methodology is applied. The extracted local kinetic model constants work well over a fairly broad range of operating conditions for specific and complex reaction sets in specific and complex reactor systems.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: January 11, 2000
    Assignee: The University of Chicago
    Inventors: Shen-Lin Chang, Steven A. Lottes, Chenn Q. Zhou