Patents by Inventor David Philpot

David Philpot 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: 20220241434
    Abstract: This invention relates to polynucleotides comprising UBE3A open reading frame (ORF) sequences, vectors comprising the same, and methods of using the same for delivery of the ORF to a cell or a subject and to treat disorders associated with aberrant expression of a UBE3A gene or aberrant activity of a UBE3A gene product in the subject, such as Angelman Syndrome.
    Type: Application
    Filed: May 22, 2020
    Publication date: August 4, 2022
    Inventors: Benjamin David Philpot, Steven James Gray, Charles Shyng, Matthew Judson
  • Patent number: 11001748
    Abstract: A method begins with the step of preparing a drag-reducing additive by mixing a dispersion polymer with a surfactant and a solvent. The method continues with the step of forming a drag-reducing composition by combining the drag-reducing additive with an aqueous treatment fluid. The method further involves the step of injecting the drag-reducing composition into a subterranean formation, a pipeline or a gathering line.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: May 11, 2021
    Assignee: Flotek Chemistry, LLC
    Inventors: Andrei Zelenev, Lakia Champagne, David Philpot
  • Patent number: 10696887
    Abstract: An oxidative breaker system for use in reducing the viscosity of a polysaccharide-based or derivatized polysaccharide-based suspension includes a silicone carrier fluid, an oxidizer, and a suspension aid. The suspension aid is preferably fumed silica. The oxidizer may be selected from the group consisting of alkali metal peroxide, transition metal peroxide, persulfate compound, bromide compound, and bromate compound. In highly preferred embodiments, the oxidizer is magnesium peroxide or calcium peroxide. Alternative carrier fluids and suspension agents are also included in the art. Also disclosed is a method for breaking a polysaccharide-based suspension with the inventive oxidative breaker system.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: June 30, 2020
    Assignee: Flotek Chemistry, LLC
    Inventors: Keith Ingram Dismuke, David Philpot, Randal M. Hill, Rondell Pennypacker, Steven Hill, Thomas R. Sifferman
  • Patent number: 10301630
    Abstract: The present invention provides methods and compositions for inducing expression of Ube3a in a cell by contacting the cell with a topoisomerase inhibitor. Particular embodiments include a method of treating a genomic imprinting disorder, such as Angelman syndrome, in a subject by administering to the subject an effective amount of a topoisomerase inhibitor.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: May 28, 2019
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Benjamin David Philpot, Mark John Zylka, Bryan Leo Roth, John Arthur Allen, Hsien-Sung Huang
  • Publication number: 20190093003
    Abstract: A method begins with the step of preparing a drag-reducing additive by mixing a dispersion polymer with a surfactant and a solvent. The method continues with the step of forming a drag-reducing composition by combining the drag-reducing additive with an aqueous treatment fluid. The method further involves the step of injecting the drag-reducing composition into a subterranean formation, a pipeline or a gathering line.
    Type: Application
    Filed: November 30, 2018
    Publication date: March 28, 2019
    Applicant: Flotek Chemistry, LLC
    Inventors: Andrei Zelenev, Lakia Champagne, David Philpot
  • Patent number: 10144865
    Abstract: A method of preparing a drag-reducing composition that includes a dispersion polymer includes steps for preparing the dispersion polymer, steps for incorporating the dispersion polymer into a drag-reducing composition, and steps for using the drag-reducing composition. The step of preparing a dispersion polymer includes preparing an aqueous mixture by adding a water-soluble salt and at least one polymeric dispersant to water and polymerizing one or more water-soluble monomers in the aqueous mixture. Once the dispersion polymer has been combined with the drag-reducing additive, the combination is injected into a subterranean formation, a pipeline or a gathering line.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: December 4, 2018
    Assignee: Flotek Chemistry, LLC
    Inventors: Andrei Zelenev, Lakia Champagne, David Philpot
  • Publication number: 20180187068
    Abstract: A method of preparing a drag-reducing composition that includes a dispersion polymer includes steps for preparing the dispersion polymer, steps for incorporating the dispersion polymer into a drag-reducing composition, and steps for using the drag-reducing composition. The step of preparing a dispersion polymer includes preparing an aqueous mixture by adding a water-soluble salt and at least one polymeric dispersant to water and polymerizing one or more water-soluble monomers in the aqueous mixture. Once the dispersion polymer has been combined with the drag-reducing additive, the combination is injected into a subterranean formation, a pipeline or a gathering line.
    Type: Application
    Filed: February 27, 2018
    Publication date: July 5, 2018
    Applicant: Flotek Chemistry, LLC
    Inventors: Earl Parnell, Todd Sanner, Marlin Holtmyer, David Philpot, Andrei Zelenev, Gydeon Gilzow, Thomas Sifferman, Lakia Champagne
  • Publication number: 20180016584
    Abstract: The present invention provides methods and compositions for inducing expression of Ube3a in a cell by contacting the cell with a topoisomerase inhibitor. Particular embodiments include a method of treating a genomic imprinting disorder, such as Angelman syndrome, in a subject by administering to the subject an effective amount of a topoisomerase inhibitor.
    Type: Application
    Filed: June 22, 2017
    Publication date: January 18, 2018
    Inventors: Benjamin David Philpot, Mark John Zylka, Bryan Lao Roth, John Arthur Allen, Hsien-Sung Huang
  • Publication number: 20170313925
    Abstract: An oxidative breaker system for use in reducing the viscosity of a polysaccharide-based or derivatized polysaccharide-based suspension includes a silicone carrier fluid, an oxidizer, and a suspension aid. The suspension aid is preferably fumed silica. The oxidizer may be selected from the group consisting of alkali metal peroxide, transition metal peroxide, persulfate compound, bromide compound, and bromate compound. In highly preferred embodiments, the oxidizer is magnesium peroxide or calcium peroxide. Alternative carrier fluids and suspension agents are also included in the art. Also disclosed is a method for breaking a polysaccharide-based suspension with the inventive oxidative breaker system.
    Type: Application
    Filed: May 15, 2017
    Publication date: November 2, 2017
    Applicant: Flotek Chemistry, LLC
    Inventors: Keith Ingram Dismuke, David Philpot, Randal M. Hill, Rondell Pennypacker, Steven Hill, Thomas R. Sifferman
  • Patent number: 9714427
    Abstract: The present invention provides methods and compositions for inducing expression of Ube3a in a cell by contacting the cell with a topoisomerase inhibitor. Particular embodiments include a method of treating a genomic imprinting disorder, such as Angelman syndrome, in a subject by administering to the subject an effective amount of a topoisomerase inhibitor.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: July 25, 2017
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Benjamin David Philpot, Mark John Zylka, Bryan Leo Roth, John Arthur Allen, Hsien-Sung Huang
  • Patent number: 8916508
    Abstract: A method of preparing and using a drag-reducing composition in a well treatment operation includes the step of preparing the drag-reducing composition by mixing a polymer emulsion that includes a first surfactant and a first solvent, with a second surfactant and a second solvent. The method continues with the step of combining the drag-reducing composition with an aqueous treatment fluid. The method further includes the step of injecting the drag-reducing composition and aqueous treatment fluid into a subterranean formation, a pipeline or a gathering line.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: December 23, 2014
    Assignee: CESI Chemical, Inc.
    Inventors: Earl Parnell, Todd Sanner, Marlin Holtmyer, David Philpot, Andrei Zelenev, Gydeon Gilzow, Lakia Champagne, Thomas Sifferman
  • Publication number: 20140323366
    Abstract: A method of preparing and using a drag-reducing composition in a well treatment operation includes the step of preparing the drag-reducing composition by mixing a polymer emulsion that includes a first surfactant and a first solvent, with a second surfactant and a second solvent. The method continues with the step of combining the drag-reducing composition with an aqueous treatment fluid. The method further includes the step of injecting the drag-reducing composition and aqueous treatment fluid into a subterranean formation, a pipeline or a gathering line.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 30, 2014
    Inventors: Earl Parnell, Todd Sanner, Marlin Holtmyer, David Philpot, Andrei Zelenev, Gydeon Gilzow, Thomas Sifferman, Lakia Champagne
  • Patent number: 8865632
    Abstract: A drag-reducing additive includes 40-85% by weight of a polymer emulsion that includes a polymer, a first surfactant, and a first solvent; 10-35% by weight of a second surfactant with an HLB greater than 8; and 5-30% by weight of a second solvent. In a preferred embodiment, the second solvent includes a terpene. In another preferred embodiment, the polymer is a copolymer that includes acrylamide and acrylic acid.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: October 21, 2014
    Assignee: CESI Chemical, Inc.
    Inventors: Earl Parnell, Todd Sanner, Marlin Holtmyer, David Philpot, Andrei Zelenev, Gydeon Gilzow, Lakia Champagne, Thomas Sifferman
  • Publication number: 20140262274
    Abstract: An oxidative breaker system for use in reducing the viscosity of a guar-based suspension includes a silicone oil carrier fluid, an oxidizer and a suspension aid. The suspension aid is preferably fumed silica. The oxidizer may be selected from the group consisting of alkali metal peroxide, transition metal peroxide, persulfate, bromide and bromate. In highly preferred embodiments, the oxidizer is magnesium peroxide or calcium peroxide. Also disclosed is a method for breaking a guar-based suspension with the inventive oxidative breaker system.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: Keith Dismuke, David Philpot, Randal Hill, Rondell Pennypacker, Steven Hill
  • Publication number: 20140274822
    Abstract: An oxidative breaker system for use in reducing the viscosity of a polysaccharide-based or derivatized polysaccharide-based suspension includes a silicone carrier fluid, an oxidizer, and a suspension aid. The suspension aid is preferably fumed silica. The oxidizer may be selected from the group consisting of alkali metal peroxide, transition metal peroxide, persulfate compound, bromide compound, and bromate compound. In highly preferred embodiments, the oxidizer is magnesium peroxide or calcium peroxide. Alternative carrier fluids and suspension agents are also included in the art. Also disclosed is a method for breaking a polysaccharide-based suspension with the inventive oxidative breaker system.
    Type: Application
    Filed: October 16, 2013
    Publication date: September 18, 2014
    Applicant: CESI Chemical, Inc.
    Inventors: Keith Dismuke, David Philpot, Randal Hill, Rondell Pennypacker, Steven Hill, Thomas R. Sifferman
  • Publication number: 20130317018
    Abstract: The present invention provides methods and compositions for inducing expression of Ube3a in a cell by contacting the cell with a topoisomerase inhibitor. Particular embodiments include a method of treating a genomic imprinting disorder, such as Angelman syndrome, in a subject by administering to the subject an effective amount of a topoisomerase inhibitor.
    Type: Application
    Filed: November 9, 2011
    Publication date: November 28, 2013
    Inventors: Benjamin David Philpot, Mark John Zylka, Bryan Leo Roth, John Arthur Allen, Hsien-Sung Huang
  • Publication number: 20120035085
    Abstract: A method of preparing and using a drag-reducing composition in a well treatment operation includes the step of preparing the drag-reducing composition by mixing a polymer emulsion that includes a first surfactant and a first solvent, with a second surfactant and a second solvent. The method continues with the step of combining the drag-reducing composition with an aqueous treatment fluid. The method further includes the step of injecting the drag-reducing composition and aqueous treatment fluid into a subterranean formation, a pipeline or a gathering line.
    Type: Application
    Filed: October 14, 2011
    Publication date: February 9, 2012
    Applicant: CESI CHEMICAL, INC.
    Inventors: Earl Parnell, Todd Sanner, Marlin Holtmyer, David Philpot, Andrei Zelenev, Gydeon Gilzow, Lakia Champagne, Thomas Sifferman