Patents by Inventor Loren Leon Ansell
Loren Leon Ansell 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).
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Patent number: 7670983Abstract: Fischer-Tropsch hydrocarbon synthesis using a noncobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided hydrodewaxing catalyst that has been reduced and then treated by contacting it with a stream containing one or more oxygenates.Type: GrantFiled: February 20, 2008Date of Patent: March 2, 2010Assignee: ExxonMobil Research and Engineering CompanyInventors: Adeana Richelle Bishop, William Berlin Genetti, Jack Wayne Johnson, Loren Leon Ansell, Nancy Marie Page
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Publication number: 20080146437Abstract: Fischer-Tropsch hydrocarbon synthesis using a noncobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided hydrodewaxing catalyst that has been reduced and then treated by contacting it with a stream containing one or more oxygenates.Type: ApplicationFiled: February 20, 2008Publication date: June 19, 2008Inventors: Adeana Richelle Bishop, William Berlin Genetti, Jack Wayne Johnson, Loren Leon Ansell, Nancy Marie Page
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Patent number: 7344631Abstract: Fischer-Tropsch hydrocarbon synthesis using a noncobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided hydrodewaxing catalyst that has been reduced and then treated by contacting it with a stream containing one or more oxygenates.Type: GrantFiled: August 29, 2003Date of Patent: March 18, 2008Assignee: ExxonMobil Research and Engineering CompanyInventors: Adeana Richelle Bishop, William Berlin Genetti, Jack Wayne Johnson, Loren Leon Ansell, Nancy Marie Page
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Patent number: 7241375Abstract: A heavy hydrocarbon composition with utility as a heavy hydrocarbon base stock comprising at least 95 wt % paraffin molecules, of which at least 90 wt % are isoparaffin, containing hydrocarbon molecules having consecutive numbers of carbon atoms, is a liquid at 100° C., at which temperature its kinematic viscosity, as measured by ASTM D-445, is above 8 cSt, has an initial boiling point of least 850° F. (454° C.) and an end boiling point of at least 1000° F. (538° C.), wherein the branching index (BI), as measured by the percentage of methyl hydrogens, and the branching proximity (CH2>4), as measured by the percentage of recurring methylene carbons which are four or more carbon atoms removed from an end group or branch, of said isoparaffinic hydrocarbon molecules, are such that: (a) BI?0.5(CH2>4)<15; and (b) BI+0.85(CH2>4)<45; as measured over the heavy hydrocarbon composition as a whole.Type: GrantFiled: August 29, 2003Date of Patent: July 10, 2007Assignee: ExxonMobil Research and Engineering CompanyInventors: Jack Wayne Johnson, Adeana Richelle Bishop, William Berlin Genetti, Loren Leon Ansell, Rocco Anthony Fiato
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Patent number: 7201838Abstract: Fischer-Tropsch hydrocarbon synthesis using a cobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided 10-ring, 1-dimensional zeolite catalyst that has been reduced and then treated by contacting it with the synthesized hydrocarbons containing one or more oxygenates, including indigenous oxygenate. Tail gas from the hydrodewaxing reactor can be used for the hydrocarbon synthesis.Type: GrantFiled: August 29, 2003Date of Patent: April 10, 2007Assignee: ExxonMobil Research and Engineering CompanyInventors: Adeana Richelle Bishop, William Berlin Genetti, Jack Wayne Johnson, Loren Leon Ansell, Nancy Marie Page
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Patent number: 7132042Abstract: Dewaxed fuel and lubricant base stocks are made by (a) producing a synthesis gas from natural gas, (b) reacting the H2 and CO in the gas in the presence of a cobalt Fischer-Tropsch catalyst, at reaction conditions effective to synthesize a waxy hydrocarbon feed boiling in the fuel and lubricant oil ranges, which is hydrodewaxed in a first stage to produce a dewaxed fuel and a partially dewaxed lubricant fraction. The partially dewaxed lubricant fraction is separated into heavy and lower boiling fractions each of which is separately hydrodewaxed, to produce lubricant base stocks. A hydrodewaxing catalyst comprising a hydrogenation component, binder and solid acid component used to hydrodewax at least one, and preferably at least two of the waxy feed and partially dewaxed heavy and lower boiling lubricant fractions.Type: GrantFiled: October 8, 2002Date of Patent: November 7, 2006Assignee: ExxonMobil Research and Engineering CompanyInventors: William Berlin Genetti, Adeana Richelle Bishop, Nancy Marie Page, Gregg Johnston Howsmon, Loren Leon Ansell, Jack Wayne Johnson
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Patent number: 6846778Abstract: A synthetic, isoparaffinic heavy hydrocarbon composition useful as a heavy lubricant base stock contains hydrocarbon molecules having consecutive numbers of carbon atoms, is a liquid at 100° C., at which temperature its kinematic viscosity is above 8 cSt and has respective initial and end boiling points of at least 850 and 1000° F. (454 and 538° C.). The branching index BI and the branching proximity CH2>4 of the isoparaffinic hydrocarbon molecules, are such that: BI?0.5(CH2>4)<15; and??(a) BI+0.85(CH2>4)<45;??(b) as measured over the hydrocarbon composition as a whole.Type: GrantFiled: October 8, 2002Date of Patent: January 25, 2005Assignee: ExxonMobil Research and Engineering CompanyInventors: Jack Wayne Johnson, Adeana Richelle Bishop, William Berlin Genetti, Loren Leon Ansell, Rocco Anthony Fiato
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Patent number: 6846848Abstract: A hydrocarbon wax product from a hydrocarbon synthesis slurry comprising liquid synthesis product and catalyst particles is purified by introducing a portion of hydrocarbon synthesis slurry from a hydrocarbon synthesis zone to a treatment zone in which a treatment gas contacts the hydrocarbon synthesis slurry. Hydrogen or a hydrogen-containing gas is useful as the treatment gas. The gas treatment removes impurities from the hydrocarbon wax portion of the hydrocarbon synthesis slurry. Purified wax product is separated and removed in situ via wax withdrawal means. This avoids or minimizes the need for further treating the wax product.Type: GrantFiled: August 23, 2002Date of Patent: January 25, 2005Assignee: ExxonMobil Research and Engineering CompanyInventors: Robert Jay Wittenbrink, Loren Leon Ansell, Daniel Francis Ryan, Louis Francis Burns
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Publication number: 20040129604Abstract: Catalytic dewaxing of paraffin containing feeds, preferably feeds produced from syn gas using a non-shifting Fischer-Tropsch catalyst, is accomplished at relatively low hydrogen partial pressures without substantial effect on the life of the dewaxing catalyst having a certain pore structure.Type: ApplicationFiled: August 29, 2003Publication date: July 8, 2004Inventors: William Berlin Genetti, Zhaozhong Jiang, Daniel Francis Ryan, Adeana Richelle Bishop, Loren Leon Ansell, Jack Wayne Johnson, Nancy Marie Page
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Publication number: 20040072676Abstract: Fischer-Tropsch hydrocarbon synthesis using a noncobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided hydrodewaxing catalyst that has been reduced and then treated by contacting it with a stream containing one or more oxygenates.Type: ApplicationFiled: August 29, 2003Publication date: April 15, 2004Inventors: Adeana Richelle Bishop, William Berlin Genetti, Jack Wayne Johnson, Loren Leon Ansell, Nancy Marie Page
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Publication number: 20040067843Abstract: Fischer-Tropsch hydrocarbon synthesis using a cobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided 10-ring, 1-dimensional zeolite catalyst that has been reduced and then treated by contacting it with the synthesized hydrocarbons containing one or more oxygenates, including indigenous oxygenate. Tail gas from the hydrodewaxing reactor can be used for the hydrocarbon synthesis.Type: ApplicationFiled: August 29, 2003Publication date: April 8, 2004Inventors: Adeana Richelle Bishop, William Berlin Genetti, Jack Wayne Johnson, Loren Leon Ansell, Nancy Marie Page
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Publication number: 20040065582Abstract: Catalytic dewaxing of paraffin containing feeds, preferably feeds produced from a non-shifting Fischer-Tropsch catalyst, is accomplished at relatively low hydrogen partial pressures without substantial affect on the life of a catalyst having a certain pore structure.Type: ApplicationFiled: October 8, 2002Publication date: April 8, 2004Inventors: William Berlin Genetti, Zhaozhong Jiang, Daniel Francis Ryan, Adeana Richelle Bishop, Loren Leon Ansell, Jack Wayne Johnson, Nancy Marie Page
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Publication number: 20040065588Abstract: Dewaxed fuel and lubricant base stocks are made by (a) producing a synthesis gas from natural gas, (b) reacting the H2 and CO in the gas in the presence of a cobalt Fischer-Tropsch catalyst, at reaction conditions effective to synthesize a waxy hydrocarbon feed boiling in the fuel and lubricant oil ranges, which is hydrodewaxed in a first stage to produce a dewaxed fuel and a partially dewaxed lubricant fraction. The partially dewaxed lubricant fraction is separated into heavy and lower boiling fractions each of which is separately hydrodewaxed, to produce lubricant base stocks. A hydrodewaxing catalyst comprising a hydrogenation component, binder and solid acid component used to hydrodewax at least one, and preferably at least two of the waxy feed and partially dewaxed heavy and lower boiling lubricant fractions.Type: ApplicationFiled: October 8, 2002Publication date: April 8, 2004Inventors: William Berlin Genetti, Adeana Richelle Bishop, Nancy Marie Page, Gregg Johnston Howsmon, Loren Leon Ansell, Jack Wayne Johnson
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Publication number: 20040067856Abstract: A synthetic, isoparaffinic heavy hydrocarbon composition useful as a heavy lubricant base stock contains hydrocarbon molecules having consecutive numbers of carbon atoms, is a liquid at 100° C., at which temperature its kinematic viscosity is above 8 cSt and has respective initial and end boiling points of at least 850 and 1000° F. (454 and 538° C.).Type: ApplicationFiled: October 8, 2002Publication date: April 8, 2004Inventors: Jack Wayne Johnson, Adeana Richelle Bishop, William Berlin Genetti, Loren Leon Ansell, Rocco Anthony Fiato
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Publication number: 20040065584Abstract: A heavy lubricant base stock is made by (a) producing a synthesis gas from natural gas, (b) reacting the H2 and CO in the gas in the presence of a cobalt Fischer-Tropsch catalyst, at reaction conditions effective to synthesize waxy hydrocarbons boiling in the heavy lubricant oil range, which are hydrodewaxed it at least two stages, with interstage separation and removal of the lighter material.Type: ApplicationFiled: October 8, 2002Publication date: April 8, 2004Inventors: Adeana Richelle Bishop, William Berlin Genetti, Nancy Marie Page, Loren Leon Ansell, Jack Wayne Johnson
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Patent number: 6677388Abstract: Wax in water emulsions prepared from Fischer-Tropsch derived waxes, Fischer-Tropsch process water, and two alkyl ethoxylated phenol nonionic surfactants having different hydrophilic-lipophilic balances provide high performance pipeline transport of waxes with reduced pipeline fouling.Type: GrantFiled: July 20, 2001Date of Patent: January 13, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Tapan Chakrabarty, Robert Jay Wittenbrink, Paul Joseph Berlowitz, Loren Leon Ansell
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Publication number: 20030057132Abstract: A hydrocarbon wax product from a hydrocarbon synthesis slurry comprising liquid synthesis product and catalyst particles is purified by introducing a portion of hydrocarbon synthesis slurry from a hydrocarbon synthesis zone to a treatment zone in which a treatment gas contacts the hydrocarbon synthesis slurry. Hydrogen or a hydrogen-containing gas is useful as the treatment gas. The gas treatment removes impurities from the hydrocarbon wax portion of the hydrocarbon synthesis slurry. Purified wax product is separated and removed in situ via wax withdrawal means. This avoids or minimizes the need for further treating the wax product.Type: ApplicationFiled: August 23, 2002Publication date: March 27, 2003Inventors: Robert Jay Wittenbrink, Loren Leon Ansell, Daniel Francis Ryan, Louis Francis Burns
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Publication number: 20020156172Abstract: The melt flow of a polymer or mixture of polymers is increased by mixing the polymer with a Fischer-Tropsch wax yet the flexural strength and hardness of the polymer is not significantly decreased.Type: ApplicationFiled: February 15, 2002Publication date: October 24, 2002Inventors: William Berlin Genetti, Loren Leon Ansell, Daniel Francis Ryan, Jack Wayne Johnson, Eric Bart Sirota, Paul Joseph Berlowitz
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Publication number: 20020077370Abstract: Wax in water emulsions prepared from waxes, Fischer-Tropsch water and two surfactants provide high performance pipeline transport of waxes with reduced pipeline fouling.Type: ApplicationFiled: July 20, 2001Publication date: June 20, 2002Inventors: Tapan Chakrabarty, Robert Jay Wittenbrink, Paul Joseph Berlowitz, Loren Leon Ansell