Patents by Inventor Clifford Alan Maat

Clifford Alan Maat 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).

  • Multi-stage oxidative dehydrogenation process with inter-stage cooling
    Patent number: 10035740
    Abstract: A method of oxidatively dehydrogenating a dehydrogenation reactant includes providing a first gaseous feed stream to a first adiabatic, catalytic reaction zone with less than a stoichiometric amount of oxygen and superheated steam, oxidatively dehydrogenating dehydrogenation reactant in said first adiabatic, catalytic reaction zone and subsequently cooling the effluent, adding additional oxygen and reacting the effluent stream in at least one subsequent adiabatic reaction zone. The dehydrogenation system enables higher conversion and yield per pass and in some cases greatly reduces steam usage and energy costs. In a preferred integrated process, ethylene is converted to n-butene which is then oxidatively dehydrogenated to butadiene.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: July 31, 2018
    Assignee: TPC Group LLC
    Inventors: Clifford Alan Maat, Joseph G. Duff, Liana Caciula, Michael O. Nutt, Robert Z. Confair, Mark P. Kaminsky, Jillian M. Horn, Gus K. Georgeton
  • Multi-Stage Oxidative Dehydrogenation Process with Inter-Stage Cooling
    Publication number: 20160023963
    Abstract: A method of oxidatively dehydrogenating a dehydrogenation reactant includes providing a first gaseous feed stream to a first adiabatic, catalytic reaction zone with less than a stoichiometric amount of oxygen and superheated steam, oxidatively dehydrogenating dehydrogenation reactant in said first adiabatic, catalytic reaction zone and subsequently cooling the effluent, adding additional oxygen and reacting the effluent stream in at least one subsequent adiabatic reaction zone. The deydrogenation system enables higher conversion and yield per pass and in some cases greatly reduces steam usage and energy costs. In a preferred integrated process, ethylene is converted to n-butene which is then oxidatively dehydrogenated to butadiene.
    Type: Application
    Filed: March 7, 2014
    Publication date: January 28, 2016
    Inventors: Clifford Alan Maat, Joseph G. Duff, Liana Caciula, Michael O. Nutt, Robert Z. Confair, Mark P. Kaminsky, Jillian M. Horn, Gus K. Georgeton