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  • Ozkan, Umit S. and Watson, Rick K. “Preparation and Use of a Catalyst for the Oxidative Dehydrogenation of Lower Alkanes,” U.S. Patent 6,521,808, Feb 18, 2003.

  • Ozkan, Umit S. and Watson, Junko M.  “Catalyst and Method of Use in the Reduction of Nitrogen Oxides Using Lower Hydrocarbons,” U.S. Patent 6,709,643, March 23, 2004.

  • Ozkan, Umit S., Holmgreen, Erik M., and Yung, Matthew M. “Multi-stage Catalyst Systems,” U.S. Patent 7,488,462, February 2009.

  • Ozkan, Umit S., Zhang, Lingzhi, Wang, Xueqin, Natesakhawat, Sittichai. “Catalyst for Hydrogen Production for Water Gas Shift Reaction,” U.S. Patent 7,947,251, May 2011.

  • Ozkan, Umit S., Holmgreen, Erik M., Yung, Matthew M. “Catalyst Systems and Uses thereof for CO Removal,” U.S. Patent 8,226,918, July 2012.

  • Ozkan, Umit S., von Deak, Dieter, Biddinger, Elizabeth J. “Phosphorus-Doped Carbon-Containing Catalyst for Proton Exchange Membranes and Method for Making Same,” U.S. Patent 9,136,542, September 2015.