Patents by Inventor Don J. Stevens

Don J. Stevens 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).

  • Fast regeneration of sulfur deactivated Ni-based hot biomass syngas cleaning catalysts
    Publication number: 20110039686
    Abstract: A new regeneration method has been developed which can effectively and efficiently remove sulfur from Ni-based steam reforming catalysts. In its simplest form the present invention comprises the steps of oxidizing a catalyst with a dilute O2 stream; decomposing the nickel sulfate under inert gas stream and removing sub-surface sulfur under steam reforming conditions. In some embodiments these steps can all be accomplished and the regenerated catalyst be reintroduced to a steam reforming operation in a matter of eight hours or less.
    Type: Application
    Filed: August 13, 2010
    Publication date: February 17, 2011
    Applicant: BATTELLE MEMORIAL INSTITUTE
    Inventors: Liyu Li, Christopher J. Howard, David L. King, Mark A. Gerber, Robert A. Dagle, Don J. Stevens
  • Alcohol synthesis from CO or CO
    Patent number: 7858667
    Abstract: Methods for producing alcohols from CO or CO2 and H2 utilizing a palladium-zinc on alumina catalyst are described. Methods of synthesizing alcohols over various catalysts in microchannels are also described. Ethanol, higher alcohols, and other C2+ oxygenates can produced utilizing Rh—Mn or a Fisher-Tropsch catalyst.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: December 28, 2010
    Assignee: Battelle Memorial Institute
    Inventors: Jianli Hu, Robert A. Dagle, Jamelyn D. Holladay, Chunshe Cao, Yong Wang, James F. White, Douglas C. Elliott, Don J. Stevens
  • Golf putter head
    Patent number: D328115
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: July 21, 1992
    Inventor: Don J. Stevens