Patents Assigned to Rentech, Inc.
  • Patent number: 6051339
    Abstract: A cathode for use in an electrochemical cell comprising a lithiated isopolyvanadate or heteropolyvanadate wherein the isopolyvanadate or heteropolyvanate has a cage structure, and an electrochemical battery comprising an alkali metal anode, an ionically conductive electrolyte and a cathode which comprises a lithiated isopolyvanadate or heteropolyvanadate having a cage structure, are described.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: April 18, 2000
    Assignee: Rentech, Inc.
    Inventors: Dale R. Shackle, Benjamin Chaloner-Gill
  • Patent number: 5980855
    Abstract: A method for lithiating a metal compound with lithium metal in the presence of a catalyst, wherein the lithiated metal compound is useful as a cathode in an electrochemical battery, is described.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: November 9, 1999
    Assignee: Rentech, Inc.
    Inventors: Dale R. Shackle, Benjamin Chaloner-Gill
  • Patent number: 5763716
    Abstract: A process of converting a feed of hydrocarbon-containing gases into liquid hydrocarbon products including a first reaction of converting the feed into one to 2.5 parts of hydrogen to one part carbon monoxide in the presence of carbon dioxide and then secondly reacting the hydrogen and carbon monoxide in a Fischer-Tropsch synthesis reactor using a promoted iron oxide catalyst slurry to form liquid hydrocarbon products, wherein the carbon dioxide from the first and second reactions is separated from the product streams and at least a portion of the separated carbon dioxide is recycled into the first reaction feed and the hydrocarbon products are separated by distillation and a normally gaseous portion of the separated products are further reacted in another Fischer-Tropsch synthesis reactor to produce additional liquid hydrocarbon product.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: June 9, 1998
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
  • Patent number: 5645613
    Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversion efficiencies and optimum chain growth are characteristics of the processes.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: July 8, 1997
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
  • Patent number: 5620670
    Abstract: A process of converting a feed of hydrocarbon-containing gases into liquid hydrocarbon products including a first reaction of converting the feed into one to 2.5 parts of hydrogen to one part carbon monoxide in the presence of carbon dioxide and then secondly reacting the hydrogen and carbon monoxide in a Fischer-Tropsch synthesis reactor using a promoted iron oxide catalyst slurry to form liquid hydrocarbon products, wherein the carbon dioxide from the first and second reactions is separated from the product streams and at least a portion of the separated carbon dioxide is recycled into the first reaction feed.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 15, 1997
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
  • Patent number: 5621155
    Abstract: A process of converting a feed of hydrocarbon-containing gases into liquid hydrocarbon products including a first reaction of converting the feed into one to 2.5 parts of hydrogen to one part carbon monoxide in the presence of carbon dioxide and then secondly reacting the hydrogen and carbon monoxide in a Fischer-Tropsch synthesis reactor using a promoted iron oxide catalyst slurry to form liquid hydrocarbon products, wherein the carbon dioxide from the first and second reactions is separated from the product streams and at least a portion of the separated carbon dioxide is recycled into the first reaction feed.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: April 15, 1997
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
  • Patent number: 5543437
    Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversion efficiencies and optimum chain growth are characteristics of the processes.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 6, 1996
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
  • Patent number: 5506272
    Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversion efficiencies and optimum chain growth are characteristics of the processes.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 9, 1996
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
  • Patent number: 5504118
    Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversion efficiencies and optimum chain growth are characteristics of the processes.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: April 2, 1996
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
  • Patent number: 5500449
    Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversions efficiencies and optimum chain growth are characteristics of the processes.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 19, 1996
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
  • Patent number: 5324335
    Abstract: An oxygen-containing diesel fuel additive for reducing particulate airborne emissions which additive is produced in a Fischer-Tropsch synthesis reaction using a promoted iron-based catalyst. The additive contains alcohols having at least five carbon atoms, and is employed in diesel fuel in an amount sufficient to provide an oxygen content in the diesel fuel of up to about 2% by weight while maintaining diesel fuel specification limits for viscosity.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: June 28, 1994
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson