Patents by Inventor Randy D. Cortright

Randy D. Cortright 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: 20130036660
    Abstract: The present invention provides methods, reactor systems, and catalysts for converting in a continuous process biomass to fuels and chemicals. The invention includes methods of converting the water insoluble components of biomass, such as hemicellulose, cellulose and lignin, to volatile C2+O1-2 oxygenates, such as alcohols, ketones, cyclic ethers, esters, carboxylic acids, aldehydes, and mixtures thereof. In certain applications, the volatile C2+O1-2 oxygenates can be collected and used as a final chemical product, or used in downstream processes to produce liquid fuels, chemicals and other products.
    Type: Application
    Filed: May 23, 2012
    Publication date: February 14, 2013
    Applicant: Virent, Inc.
    Inventors: Elizabeth Woods, Ming Qiao, Paul Myren, Randy D. Cortright, John Kania
  • Patent number: 8367882
    Abstract: Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to hydrocarbons, ketones, cyclic ethers and alcohols useful as liquid fuels, such as gasoline, jet fuel or diesel fuel, and industrial chemicals. The process involves the conversion of oxygenated hydrocarbons, such as alcohols, ketones, aldehydes, furans, carboxylic acids, diols, triols, and/or other polyols, to C4+ hydrocarbons, cyclic ethers, alcohols and/or ketones, by condensation and/or deoxygenation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: February 5, 2013
    Assignee: Virent, Inc.
    Inventors: Randy D. Cortright, Paul G. Blommel
  • Patent number: 8362307
    Abstract: Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to hydrocarbons, ketones and alcohols useful as liquid fuels, such as gasoline, jet fuel or diesel fuel, and industrial chemicals. The process involves the conversion of mono-oxygenated hydrocarbons, such as alcohols, ketones, aldehydes, furans, carboxylic acids, diols, triols, and/or other polyols, to C4+ hydrocarbons, alcohols and/or ketones, by condensation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: January 29, 2013
    Assignee: Virent, Inc.
    Inventors: Randy D. Cortright, Paul G. Blommel
  • Patent number: 8350108
    Abstract: Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to paraffins useful as liquid fuels. The process involves the conversion of water soluble oxygenated hydrocarbons to oxygenates, such as alcohols, furans, ketones, aldehydes, carboxylic acids, diols, triols, and/or other polyols, followed by the subsequent conversion of the oxygenates to paraffins by dehydration and alkylation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: January 8, 2013
    Assignee: Virent, Inc.
    Inventors: Randy D. Cortright, Paul G. Blommel, Michael J. Werner, Matthew R. Vanstraten
  • Publication number: 20120283478
    Abstract: Disclosed are methods for generating propylene glycol, ethylene glycol and other polyols, diols, ketones, aldehydes, carboxylic acids and alcohols from biomass using hydrogen produced from the biomass. The methods involve reacting a portion of an aqueous stream of a biomass feedstock solution over a catalyst under aqueous phase reforming conditions to produce hydrogen, and then reacting the hydrogen and the aqueous feedstock solution over a catalyst to produce propylene glycol, ethylene glycol and the other polyols, diols, ketones, aldehydes, carboxylic acids and alcohols. The disclosed methods can be run at lower temperatures and pressures, and allows for the production of oxygenated hydrocarbons without the need for hydrogen from an external source.
    Type: Application
    Filed: June 8, 2012
    Publication date: November 8, 2012
    Applicant: VIRENT, INC.
    Inventor: Randy D. Cortright
  • Publication number: 20120280175
    Abstract: Improved systems and methods for producing feedstock for biofuel and biochemical manufacturing processes are disclosed. Some systems and methods use components that are capable of transferring relatively high concentrations of solid biomass. Some systems and methods recycle a deconstruction catalyst.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 8, 2012
    Inventors: John Kania, Ming Qiao, Elizabeth M. Woods, Randy D. Cortright, Paul Myren
  • Publication number: 20120282163
    Abstract: Reactor systems and methods are provided for the catalytic conversion of liquid feedstocks to synthesis gases and other noncondensable gaseous products. The reactor systems include a heat exchange reactor configured to allow the liquid feedstock and gas product to flow concurrently in a downflow direction. The reactor systems and methods are particularly useful for producing hydrogen and light hydrocarbons from biomass-derived oxygenated hydrocarbons using aqueous phase reforming. The generated gases may find used as a fuel source for energy generation via PEM fuel cells, solid-oxide fuel cells, internal combustion engines, or gas turbine gensets, or used in other chemical processes to produce additional products. The gaseous products may also be collected for later use or distribution.
    Type: Application
    Filed: July 2, 2012
    Publication date: November 8, 2012
    Inventors: Randy D. Cortright, Robert T. Rozmiarek, Charles C. Hornemann
  • Patent number: 8231857
    Abstract: Disclosed are catalysts and methods that can reform aqueous solutions of oxygenated compounds such as ethylene glycol, glycerol, sugar alcohols, and sugars to generate products such as hydrogen and alkanes. In some embodiments, aqueous solutions containing at least 20 wt % of the oxygenated compounds can be reformed over a catalyst comprising a Group VIII transition metal and a Group VIIB transition metal, preferably supported on an activated carbon-supported catalyst. In other embodiments, catalysts are provided for the production of hydrogen or alkanes at reaction temperatures less than 300° C.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: July 31, 2012
    Assignee: Virent, Inc.
    Inventors: Randy D. Cortright, Nicholas W. Vollendorf, Charles C. Hornemann, Shawn P. McMahon
  • Publication number: 20120167875
    Abstract: The present invention provides processes for deconstructing biomass using a solvent produced in a bioreforming reaction.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Inventors: Ming Qiao, Randy D. Cortright, Dick A. Nagaki
  • Publication number: 20120172579
    Abstract: The present invention provides methods, reactor systems, and catalysts for converting in a continuous process biomass to less complex oxygenated compounds for use in downstream processes to produce biofuels and chemicals. The invention includes methods of converting the components of biomass, such as hemicellulose, cellulose and lignin, to water-soluble materials, including lignocellulosic derivatives, cellulosic derivatives, hemicellulosic derivatives, carbohydrates, starches, polysaccharides, disaccharides, monosaccharides, sugars, sugar alcohols, alditols, polyols, diols, alcohols, ketones, cyclic ethers, esters, carboxylic acids, aldehydes, and mixtures thereof, using hydrogen and a heterogeneous liquefaction catalyst.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Inventors: Ming Qiao, Randy D. Cortright, John Kania, Elizabeth Woods
  • Publication number: 20120172588
    Abstract: The present invention provides processes for catalytically converting biomass to oxygenated compounds suitable for use in bioreforming processes.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Inventors: Ming Qiao, Randy D. Cortright, Dick A. Nagaki, Elizabeth Woods
  • Publication number: 20120167876
    Abstract: The present invention provides processes for catalytic deconstruction of biomass using a solvent produced in a bioreforming reaction.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Inventors: Ming Qiao, Randy D. Cortright, Elizabeth Woods
  • Publication number: 20120165416
    Abstract: A low-temperature catalytic process for converting biomass (preferably glycerol recovered from the fabrication of bio-diesel) to synthesis gas (i.e., H2/CO gas mixture) in an endothermic gasification reaction is described. The synthesis gas is used in exothermic carbon-carbon bond-forming reactions, such as Fischer-Tropsch, methanol, or dimethylether syntheses. The heat from the exothermic carbon-carbon bond-forming reaction is integrated with the endothermic gasification reaction, thus providing an energy-efficient route for producing fuels and chemicals from renewable biomass resources.
    Type: Application
    Filed: March 2, 2012
    Publication date: June 28, 2012
    Inventors: Randy D. Cortright, James A. Dumesic
  • Patent number: 8198486
    Abstract: Disclosed are methods for generating propylene glycol, ethylene glycol and other polyols, diols, ketones, aldehydes, carboxylic acids and alcohols from biomass using hydrogen produced from the biomass. The methods involve reacting a portion of an aqueous stream of a biomass feedstock solution over a catalyst under aqueous phase reforming conditions to produce hydrogen, and then reacting the hydrogen and the aqueous feedstock solution over a catalyst to produce propylene glycol, ethylene glycol and the other polyols, diols, ketones, aldehydes, carboxylic acids and alcohols. The disclosed methods can be run at lower temperatures and pressures, and allows for the production of oxygenated hydrocarbons without the need for hydrogen from an external source.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: June 12, 2012
    Assignee: Virent, Inc.
    Inventor: Randy D. Cortright
  • Patent number: 8153698
    Abstract: A low-temperature catalytic process for converting biomass (preferably glycerol recovered from the fabrication of bio-diesel) to synthesis gas (i.e., H2/CO gas mixture) in an endothermic gasification reaction is described. The synthesis gas is used in exothermic carbon-carbon bond-forming reactions, such as Fischer-Tropsch, methanol, or dimethylether syntheses. The heat from the exothermic carbon-carbon bond-forming reaction is integrated with the endothermic gasification reaction, thus providing an energy-efficient route for producing fuels and chemicals from renewable biomass resources.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: April 10, 2012
    Assignees: Wisconsin Alumni Research Foundation, Virent, Inc.
    Inventors: Randy D. Cortright, James A. Dumesic
  • Publication number: 20110306804
    Abstract: Disclosed are methods for generating propylene glycol, ethylene glycol and other polyols, diols, ketones, aldehydes, carboxylic acids and alcohols from biomass using hydrogen produced from the biomass. The methods involve reacting a portion of an aqueous stream of a biomass feedstock solution over a catalyst under aqueous phase reforming conditions to produce hydrogen, and then reacting the hydrogen and the aqueous feedstock solution over a catalyst to produce propylene glycol, ethylene glycol and the other polyols, diols, ketones, aldehydes, carboxylic acids and alcohols. The disclosed methods can be run at lower temperatures and pressures, and allows for the production of oxygenated hydrocarbons without the need for hydrogen from an external source.
    Type: Application
    Filed: June 28, 2011
    Publication date: December 15, 2011
    Applicant: VIRENT ENERGY SYSTEMS, INC.
    Inventor: Randy D. Cortright
  • Patent number: 8053615
    Abstract: Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to hydrocarbons, ketones and alcohols useful as liquid fuels, such as gasoline, jet fuel or diesel fuel, and industrial chemicals. The process involves the conversion of mono-oxygenated hydrocarbons, such as alcohols, ketones, aldehydes, furans, carboxylic acids, diols, triols, and/or other polyols, to C4+ hydrocarbons, alcohols and/or ketones, by condensation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: November 8, 2011
    Assignee: Virent Energy Systems, Inc.
    Inventors: Randy D. Cortright, Paul G. Blommel
  • Publication number: 20110257416
    Abstract: Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to hydrocarbons, ketones, cyclic ethers and alcohols useful as liquid fuels, such as gasoline, jet fuel or diesel fuel, and industrial chemicals. The process involves the conversion of oxygenated hydrocarbons, such as alcohols, ketones, aldehydes, furans, carboxylic acids, diols, triols, and/or other polyols, to C4? hydrocarbons, cyclic ethers, alcohols and/or ketones, by condensation and/or deoxygenation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
    Type: Application
    Filed: June 29, 2011
    Publication date: October 20, 2011
    Applicant: VIRENT ENERGY SYSTEMS, INC.
    Inventors: Randy D. Cortright, Paul G. Blommel
  • Publication number: 20110257448
    Abstract: Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to hydrocarbons, ketones and alcohols useful as liquid fuels, such as gasoline, jet fuel or diesel fuel, and industrial chemicals. The process involves the conversion of mono-oxygenated hydrocarbons to aromatics and gasonline range hydrocarbons where the oxygenated hydrocarbons are derived from biomass.
    Type: Application
    Filed: June 9, 2011
    Publication date: October 20, 2011
    Inventors: Randy D. Cortright, Paul G. Blommel
  • Publication number: 20110245542
    Abstract: Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to hydrocarbons, ketones and alcohols useful as liquid fuels, such as gasoline, jet fuel or diesel fuel, and industrial chemicals. The process involves the conversion of mono-oxygenated hydrocarbons, such as alcohols, ketones, aldehydes, furans, carboxylic acids, diols, triols, and/or other polyols, to C4+ hydrocarbons, alcohols and/or ketones, by condensation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
    Type: Application
    Filed: June 17, 2011
    Publication date: October 6, 2011
    Applicant: Virent Energy Systems, Inc.
    Inventors: Randy D. Cortright, Paul G. Blommel