Patents by Inventor A. H. Singleton

A. H. Singleton 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).

  • Patent number: 7836957
    Abstract: A method for producing synthesis gas from underground hydrocarbon deposits is described. Oxygen and water are reacted with the hydrocarbon deposit under conditions conducive to the production of carbon monoxide and hydrogen. The method is applicable to oil reservoirs from which conventional production means are unable to recover additional oil practically, to viscous oil deposits from which production is limited, and to shale oil deposits.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: November 23, 2010
    Inventors: Alan H. Singleton, Richard A. Flinn
  • Publication number: 20090065211
    Abstract: A method for producing synthesis gas from underground hydrocarbon deposits is described. Oxygen and water are reacted with the hydrocarbon deposit under conditions conducive to the production of carbon monoxide and hydrogen. The method is applicable to oil reservoirs from which conventional production means are unable to recover additional oil practically, to viscous oil deposits from which production is limited, and to shale oil deposits.
    Type: Application
    Filed: August 20, 2008
    Publication date: March 12, 2009
    Inventors: Richard A. Flinn, Alan H. Singleton
  • Patent number: 7011809
    Abstract: A ?-alumina catalyst support having improved attrition resistance produced by a method comprising the steps of treating a particulate ?-alumina material with an acidic aqueous solution comprising water and nitric acid and then, prior to adding any catalytic material thereto, calcining the treated ?-alumina.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: March 14, 2006
    Assignee: Sasol Technology (UK) Limited
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Publication number: 20040214904
    Abstract: A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems; a method of producing an attrition-resistant catalyst; a catalyst produced by such method; a method of producing an attrition-resistant catalyst support; and a catalyst support produced by such method. The inventive method of reducing catalyst attrition losses comprises the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst. In one aspect, the catalyst preferably comprises a &ggr;-alumina support including an amount of titanium effective for increasing the attrition resistance of the catalyst. In another aspect, the catalyst preferably comprises a &ggr;-alumina support which has been treated, after calcination, with an acidic, aqueous solution. The acidic aqueous solution preferably has a pH of not more than about 5.
    Type: Application
    Filed: May 21, 2004
    Publication date: October 28, 2004
    Applicant: Sasol Technology (UK) Limited
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Patent number: 6740621
    Abstract: A catalyst support having improved attrition resistance and a catalyst produced therefrom. The catalyst support is produced by a method comprising the step of treating calcined &ggr;-alumina having no catalytic material added thereto with an acidic aqueous solution having an acidity level effective for increasing the attrition resistance of the calcined &ggr;-alumina.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: May 25, 2004
    Assignee: Sasol Technology (UK) Limited
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Patent number: 6537945
    Abstract: A highly active Fischer-Tropsch catalyst having increased thermal stability. The catalyst comprises a &ggr;-alumina support doped with an amount of lanthana oxide, barium oxide, or a combination thereof effective for increasing the thermal stability of the catalyst in a slurry bubble column reaction system while maintaining or increasing the activity of the catalyst for Fischer-Tropsch synthesis.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: March 25, 2003
    Assignee: Energy International Corporation
    Inventors: Alan H. Singleton, Rachid Oukaci
  • Publication number: 20020115616
    Abstract: This invention relates to a novel inhibitor of beta amyloid cleavage enzyme (BACE, transmembrane aspartyl protease beta-secretase, beta site APP cleavage enzyme, memapsin-2, BACE-1), pharmaceutical compositions containing it and its use in the treatment of neurological disorders such as Alzheimer's disease, Crutzfield-Jacob's disease, prion disorders, amyotrophic lateral sclerosis, progressive supranuclear palsy, head trauma, stroke, down's syndrome, pancreatitis, inclusion body myocitis, other peripheral amyloidoses and diabetes.
    Type: Application
    Filed: February 14, 2002
    Publication date: August 22, 2002
    Applicant: Pfizer Inc.
    Inventors: James G. Boyd, David H. Singleton
  • Publication number: 20010036967
    Abstract: A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems; a method of producing an attrition-resistant catalyst; a catalyst produced by such method; a method of producing an attrition-resistant catalyst support; and a catalyst support produced by such method. The inventive method of reducing catalyst attrition losses comprises the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst. In one aspect, the catalyst preferably comprises a &ggr;-alumina support including an amount of titanium effective for increasing the attrition resistance of the catalyst. In another aspect, the catalyst preferably comprises a &ggr;-alumina support which has been treated, after calcination, with an acidic, aqueous solution. The acidic aqueous solution preferably has a pH of not more than about 5.
    Type: Application
    Filed: April 27, 2001
    Publication date: November 1, 2001
    Applicant: Energy International Corporation
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Publication number: 20010031793
    Abstract: A method of conducting hydrocarbon synthesis and a highly stable cobalt on alumina catalyst therefor. The inventive method comprises the step of reacting a synthesis gas in a slurry bubble column reactor in the presence of the catalyst. The catalyst comprises a &ggr;-alumina support doped with an amount of lanthana oxide, barium oxide, or a combination thereof effective for increasing the thermal stability of the catalyst in the slurry bubble column reacting system while maintaining or increasing the activity of the catalyst.
    Type: Application
    Filed: March 16, 2001
    Publication date: October 18, 2001
    Inventors: Alan H. Singleton, Rachid Oukaci
  • Patent number: 6271432
    Abstract: Cobalt catalysts, and processes employing these inventive catalysts, for hydrocarbon synthesis. The inventive catalyst comprises cobalt on an alumina support and is not promoted with any noble or near noble metals. In one aspect of the invention, the alumina support preferably includes a dopant in an amount effective for increasing the activity of the inventive catalyst. The dopant is preferably a titanium dopant. In another aspect of the invention, the cobalt catalyst is preferably reduced in the presence of hydrogen at a water vapor partial pressure effective to increase the activity of the cobalt catalyst for hydrocarbon synthesis. The water vapor partial pressure is preferably in the range of from 0 to about 0.1 atmospheres.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: August 7, 2001
    Assignee: Energy International
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Patent number: 6262132
    Abstract: A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems; a method of producing an attrition-resistant catalyst; a catalyst produced by such method; a method of producing an attrition-resistant catalyst support; and a catalyst support produced by such method. The inventive method of reducing catalyst attrition losses comprises the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst. In one aspect, the catalyst preferably comprises a &ggr;-alumina support including an amount of titanium effective for increasing the attrition resistance of the catalyst. In another aspect, the catalyst preferably comprises a &ggr;-alumina support which has been treated, after calcination, with an acidic, aqueous solution. The acidic aqueous solution preferably has a pH of not more than about 5.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: July 17, 2001
    Assignee: Energy International Corporation
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Patent number: 6255358
    Abstract: A method of conducting hydrocarbon synthesis and a highly stable cobalt on alumina catalyst therefor. The inventive method comprises the step of reacting a synthesis gas in a slurry bubble column reactor in the presence of the catalyst. The catalyst comprises a &ggr;-alumina support doped with an amount of lanthana oxide, barium oxide, or a combination thereof effective for increasing the thermal stability of the catalyst in the slurry bubble column reacting system while maintaining or increasing the activity of the catalyst.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: July 3, 2001
    Assignee: Energy International Corporation
    Inventors: Alan H. Singleton, Rachid Oukaci
  • Publication number: 20010003787
    Abstract: Cobalt catalysts, and processes employing these inventive catalysts, for hydrocarbon synthesis. The inventive catalyst comprises cobalt on an alumina support and is not promoted with any noble or near noble metals. In one aspect of the invention, the alumina support preferably includes a dopant in an amount effective for increasing the activity of the inventive catalyst. The dopant is preferably a titanium dopant. In another aspect of the invention, the cobalt catalyst is preferably reduced in the presence of hydrogen at a water vapor partial pressure effective to increase the activity of the cobalt catalyst for hydrocarbon synthesis. The water vapor partial pressure is preferably in the range of from 0 to about 0.1 atmospheres.
    Type: Application
    Filed: December 20, 2000
    Publication date: June 14, 2001
    Applicant: Energy International Corporation
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Patent number: 6191066
    Abstract: Cobalt catalysts, and processes employing these inventive catalysts, for hydrocarbon synthesis. The inventive catalyst comprises cobalt on an alumina support and is not promoted with any noble or near noble metals. In one aspect of the invention, the alumina support preferably includes a dopant in an amount effective for increasing the activity of the inventive catalyst. The dopant is preferably a titanium dopant. In another aspect of the invention, the cobalt catalyst is preferably reduced in the presence of hydrogen at a water vapor partial pressure effective to increase the activity of the cobalt catalyst for hydrocarbon synthesis. The water vapor partial pressure is preferably in the range of from 0 to about 0.1 atmospheres.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: February 20, 2001
    Assignee: Energy International Corporation
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Patent number: 6100304
    Abstract: A process for hydrocarbon synthesis comprising the step of reacting a synthesis gas in the presence of a cobalt catalyst promoted with palladium.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: August 8, 2000
    Assignee: Energy International Corportion
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Patent number: 6007794
    Abstract: This invention relates to an aerosol hair spray formulation containing 0.5 to 15 weight percent of a water-dispersible or water-dissipatible, linear sulfopolyester having a Tg of 40.degree. C. to 50.degree. C. and an inherent viscosity of 0.24 to 0.60 dl/g which contains repeat units from 20 to 26 mole percent dimethyl-5-sodiosulfoisophthalate and 74 to 80 mole percent isophthalic acid, based on 100 mole percent dicarboxylic acid; 10 to 30 mole percent 1,4-cyclohexanedimethanol and 70 to 90 percent diethylene glycol, based on 100 mole percent diol; and up to 60 weight percent of an alcohol. The aerosol hair spray formulations are clear, have improved dry time and curl retention, and exhibit less than 20 NTU's, which is a measure of turbidity, even at high concentrations of alcohol.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: December 28, 1999
    Assignee: Eastman Chemical Company
    Inventors: Scott E. George, Vicki L. Underwood, D. Michael Garber, Andy H. Singleton
  • Patent number: 5939350
    Abstract: Processes and catalysts for conducting Fischer-Tropsch synthesis in a slurry bubble column reactor (SBCR). One aspect of the invention involves the use of cobalt catalysts without noble metal promotion in an SBCR. Another aspect involves using palladium promoted cobalt catalysts in an SBCR. Methods for preparing noble metal promoted catalysts via totally aqueous impregnation and procedures for producing attrition resistant catalysts are also provided.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: August 17, 1999
    Assignee: Energy International Corporation
    Inventors: Alan H. Singleton, Rachid Oukaci, James G. Goodwin
  • Patent number: 5853701
    Abstract: This invention relates to an aerosol hair spray formulation containing 0.5 to 15 weight percent of a water-dispersible or water-dissipatible, linear sulfopolyester having a Tg of 40.degree. C. to 50.degree. C. and an inherent viscosity of 0.24 to 0.60 dl/g which contains repeat units from 20 to 26 mole percent dimethyl-5-sodiosulfoisophthalate and 74 to 80 mole percent isophthalic acid, based on 100 mole percent dicarboxylic acid; 10 to 30 mole percent 1,4-cyclohexanedimethanol and 70 to 90 mole percent diethylene glycol, based on 100 mole percent diol; and up to 60 weight percent of an alcohol. The aerosol hair spray formulations are clear, have improved dry time and curl retention, and exhibit less than 20 NTU's, which is a measure of turbidity, even at high concentrations of alcohol.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: December 29, 1998
    Inventors: Scott E. George, Vicki L. Underwood, D. Michael Garber, Andy H. Singleton
  • Patent number: 5674479
    Abstract: This invention relates to an aerosol hair spray formulation containing 0.5 to 15 weight percent of a water-dispersible or water-dissipatible, linear sulfopolyester having a Tg of 40.degree. C. to 50.degree. C. and an inherent viscosity of 0.24 to 0.60 dl/g which contains repeat units from 20 to 26 mole percent dimethyl-5-sodiosulfoisophthalate and 74 to 80 mole percent isophthalic acid, based on 100 mole percent dicarboxylic acid; 10 to 30 mole percent 1,4-cyclohexanedimethanol and 70 to 90 mole percent diethylene glycol, based on 100 mole percent diol; and up to 60 weight percent of an alcohol. The aerosol hair spray formulations are clear, have improved dry time and curl retention, and exhibit less than 20 NTU's, which is a measure of turbidity, even at high concentrations of alcohol.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: October 7, 1997
    Assignee: Eastman Chemical Company
    Inventors: Scott E. George, Vicki L. Underwood, D. Michael Garber, Andy H. Singleton
  • Patent number: D484561
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: December 30, 2003
    Inventor: John H. Singleton