Patents by Inventor Jonathan Powell

Jonathan Powell 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: 20190216757
    Abstract: The disclosure provides methods of treating cancer in a subject or preventing a relapse or reducing the incidence of relapse of cancer in a subject in remission, comprising administering to the subject: (a) a therapeutically effective amount of an immunotherapeutic agent, e.g., an immune checkpoint blockade therapy, an adoptive cellular therapy, a marrow-infiltrating lymphocytes, an adenosine A2aR inhibitor, or an antibody; and (b) a compound having formula (1): and the pharmaceutically acceptable salts thereof, wherein R1, R2, R2?, and X are as defined as set forth in the specification. Compounds having formula (I) are prodrugs that release glutamine analogs, e.g., 6-diazo-5-oxo-L-norleucine (DON).
    Type: Application
    Filed: January 30, 2019
    Publication date: July 18, 2019
    Inventors: Barbara Slusher, Jonathan POWELL
  • Publication number: 20180320476
    Abstract: Embodiments of the present disclosure include a method of replacing valve operation methods during fracturing operations including installing a first operator on a first valve of a first fracturing tree. The method also includes installing a second operator on a second valve of a second fracturing tree, the second fracturing tree being adjacent the first fracturing tree. The method also includes removing the first operator from the first valve, the first valve maintaining a position on the first fracturing tree after the first operator is removed. The method further includes removing the second operator from the second valve, the second valve maintaining a position on the second fracturing tree after the second operator is removed. The method also includes installing the first operator on the second valve after the first operator is removed from the first valve and after the second operator is removed from the second valve.
    Type: Application
    Filed: May 3, 2018
    Publication date: November 8, 2018
    Applicant: GE Oil & Gas Pressure Control LP
    Inventors: Travis Kyle McEvoy, Lloyd Cheatham, Keith Adams, Jonathan Powell, Timothy Fuller
  • Publication number: 20180251550
    Abstract: Combinations of anti-cancer antibodies and inhibitory antibodies to CD223 overcome immune suppression in cancer patients. The inhibitory antibodies may be generated in an animal by injection of fragments of CD223. Antibodies may be monoclonal antibodies or single chain antibodies or humanized antibodies.
    Type: Application
    Filed: March 30, 2018
    Publication date: September 6, 2018
    Inventors: Drew M. Pardoll, Ching-Tai Huang, Jonathan Powell, Charles G. Drake, Dario A. Vignali, Creg J. Workman
  • Publication number: 20180221395
    Abstract: The disclosure provides methods of treating cancer in a subject or preventing a relapse or reducing the incidence of relapse of cancer in a subject in remission, comprising administering to the subject: (a) a therapeutically effective amount of an immunotherapeutic agent, e.g., an immune checkpoint blockade therapy, an adoptive cellular therapy, a marrow-infiltrating lymphocytes, an adenosine A2aR inhibitor, or an antibody; and (b) a compound having formula (I): and the pharmaceutically acceptable salts thereof, wherein R1, R2, R2?, and X are as defined as set forth in the specification. Compounds having formula (I) are prodrugs that release glutamine analogs, e.g., 6-diazo-5-oxo-L-norleucine (DON).
    Type: Application
    Filed: January 31, 2018
    Publication date: August 9, 2018
    Inventors: Barbara SLUSHER, Jonathan POWELL
  • Publication number: 20180221337
    Abstract: The disclosure provides methods of treating a condition, disease, or disorder in a subject that involves metabolically reprogrammed cells whose activation, function, growth, proliferation, or survival depends on increased activity of at least one metabolic pathway selected from the group consisting of glutamine metabolism, glycolysis, and fatty acid synthesis, comprising administering to the subject a compound having formula (I): and the pharmaceutically acceptable salts thereof, wherein R1, R2, R2?, and X are as defined as set forth in the specification. Compounds having formula (I) are prodrugs that release glutamine analogs, e.g., 6-diazo-5-oxo-L-norleucine (DON).
    Type: Application
    Filed: January 31, 2018
    Publication date: August 9, 2018
    Inventors: Barbara Slusher, Jonathan Powell
  • Patent number: 10034924
    Abstract: The presently disclosed subject matter provides methods and compositions for activation of clustered receptors on a target cell using nanocarrier-associated ligands, particularly methods and compositions for targeted activation of clustered receptors on antigen-experienced T cells using nanocarrier-associated antibodies.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: July 31, 2018
    Assignee: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Jonathan Powell, Ying-Chun Lo, Michael Edidin
  • Publication number: 20170226133
    Abstract: A compound of formula (I): for use in the prevention or treatment of a bacterial infection wherein: A is either S or Se; RA is selected from: wherein: each of Y1, Y2, Y3, Y4 and Y9 is independently selected from CH or N, wherein at least three of Y1, Y2, Y3, Y4 and Y9 is CH; V is selected from O, CH—OR01, N—CO2—RC2 or N—RN2; one of Y5, Y6, Y7 and Y8 is selected from CH and N, and the others are CH; X is selected from NH, S or O; RC1 is selected from O—RO2 or NHRN1; RO1 is selected from H and C1-3 unbranched alkyl; RO2 is C1-3 unbranched alkyl; RN1 is selected from H and C1-3 unbranched alkyl; RN2 is C1-3 unbranched alkyl; RC2 is either C1-3 unbranched alkyl or C3-4 branched alkyl; RC3 is selected from C1-3 unbranched alkyl and C2H4CO2H; RC4 is either H or Me; RC5 is either H or Me; RC6 represents one or two optional methyl substituents; and n is an integer from 2 to 8.
    Type: Application
    Filed: May 28, 2015
    Publication date: August 10, 2017
    Applicant: Auspherix Limited
    Inventors: Ian Holmes, Alan Naylor, Gabriel Negoita-Giras, Jonathan Powell, Ian Charles, Albert Dagmar
  • Publication number: 20170204123
    Abstract: A compound of formula (I) for use in the prevention or treatment of a bacterial infection wherein RP1 is either methyl, ethyl, isopropyl, cyclohexyl or phenyl; RP2 is selected from methyl, ethyl, isopropyl, cyclohexyl and phenyl; RP3 is either ethyl, isopropyl, cyclohexyl, phenyl or pyridyl; A is either S or Se; RA is selected from wherein each of Y1, Y2, Y3, Y4 and Y9 is independently selected from CH or N, wherein at least three of Y1, Y2, Y3, Y4 and Y9 are CH; V is selected from O, CH—ORO1, N—CO2—RC2 or N—RN2; one of V, Y6, Y7 and Y8 is selected from CH and N, and the others are CH; X is selected from NH, S or O; RC1 is selected from O—RO2 or NHRN1; RO1 is selected from H and C1-3 unbranched alkyl; RO2 is C1-3 unbranched alkyl; RN1 is selected from H and C1-3 unbranched alkyl; RN2 is C1-3 unbranched alkyl; RC2 is either C1-3 unbranched alkyl or C3-4 branched alkyl; RC3 is selected from C1-3 unbranched alkyl and C2H4CO2H; RC4 is either H or Me; RC5 is either H or Me; RC6 represents one or two optional methy
    Type: Application
    Filed: May 28, 2015
    Publication date: July 20, 2017
    Inventors: Ian Holmes, Alan Naylor, Gabriel Negoita-Giras, Jonathan Powell, Ian Charles, Albert Dagmar
  • Publication number: 20160339091
    Abstract: The presently disclosed subject matter provides methods and compositions for activation of clustered receptors on a target cell using nanocarrier-associated ligands, particularly methods and compositions for targeted activation of clustered receptors on antigen-experienced T cells using nanocarrier-associated antibodies.
    Type: Application
    Filed: December 22, 2014
    Publication date: November 24, 2016
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventors: JONATHAN POWELL, YING-CHUN LO, MICHAEL EDIDIN
  • Publication number: 20160108121
    Abstract: Combinations of anti-cancer antibodies and inhibitory antibodies to CD223 overcome immune suppression in cancer patients. The inhibitory antibodies may be generated in an animal by injection of fragments of CD223. Antibodies may be monoclonal antibodies or single chain antibodies or humanized antibodies.
    Type: Application
    Filed: December 18, 2015
    Publication date: April 21, 2016
    Applicants: The Johns Hopkins University, St. Jude's Children's Research Hospital Inc.
    Inventors: Drew M. Pardoll, Ching-Tai Huang, Jonathan Powell, Charles Drake, Dario A. Vignali, Creg J. Workman
  • Patent number: 9005629
    Abstract: Mammals with cancer are treated with an antibody which specifically binds to CD223 protein and inhibits negative T cell regulatory function of CD223. The mammal may be a human. The antibody may be a monoclonal antibody. The amount of the antibody administered may be sufficient to enhance an immune T cell response to the cancer.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: April 14, 2015
    Assignees: St. Jude Children's Research Hospital Inc., The Johns Hopkins University
    Inventors: Drew M Pardoll, Ching-Tai Huang, Jonathan Powell, Charles Drake, Dario A Vignali, Creg J Workman
  • Publication number: 20140127226
    Abstract: Regulatory T cells (Treg) limit autoimmunity but can also attenuate the magnitude of anti-pathogen and anti-tumor immunity. Understanding the mechanism of Treg function and therapeutic manipulation of Treg in vivo requires identification of Treg selective receptors. A comparative analysis of gene expression arrays from antigen specific CD4+ T cells differentiating to either an effector/memory or a regulatory phenotype revealed Treg selective expression of LAG-3 (CD223), a CD4-related molecule that binds MHC class II. LAG-3 expression on CD4+ T cells correlates with the cells' in vitro suppressor activity, and ectopic expression of LAG-3 on CD4 T cells confers suppressor activity on the T cells. Antibodies to LAG-3 inhibit suppression both in vitro and in vivo. LAG-3 marks regulatory T cell populations and contributes to their suppressor activity.
    Type: Application
    Filed: December 13, 2013
    Publication date: May 8, 2014
    Applicants: St. Jude's Children's Research Hospital Inc., The Johns Hopkins University
    Inventors: Drew M. PARDOLL, Ching-Tai HUANG, Jonathan POWELL, Charles DRAKE, Dario A. VIGNALI, Creg J. WORKMAN
  • Patent number: 8551481
    Abstract: Regulatory T cells (Treg) limit autoimmunity but can also attenuate the magnitude of anti-pathogen and anti-tumor immunity. Understanding the mechanism of Treg function and therapeutic manipulation of Treg in vivo requires identification of Treg selective receptors. A comparative analysis of gene expression arrays from antigen specific CD4+ T cells differentiating to either an effector/memory or a regulatory phenotype revealed Treg selective expression of LAG-3 (CD223), a CD4-related molecule that binds MHC class II. LAG-3 expression on CD4+ T cells correlates with the cells' in vitro suppressor activity, and ectopic expression of LAG-3 on CD4 T cells confers suppressor activity on the T cells. Antibodies to LAG-3 inhibit suppression both in vitro and in vivo. LAG-3 marks regulatory T cell populations and contributes to their suppressor activity.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: October 8, 2013
    Assignees: The Johns Hopkins University, St. Jude Children's Research Hospital, Inc.
    Inventors: Drew M Pardoll, Ching-Tai Huang, Jonathan Powell, Charles Drake, Dario A Vignali, Creg J Workman
  • Patent number: 8448534
    Abstract: An apparatus for dispersing a sample of particulate material, includes a carrier (31;35;37;38;39) having a sample-bearing surface on which to place the sample, and a housing (10;44;48) for forming a dispersion chamber (17), at least when closed off at a base (46;51). The carrier is arranged such that the sample-bearing surface is removed from contact with the sample upon application of a sufficient pressure differential across the carrier between the sample-bearing surface and an opposite side of the carrier. The housing (10;44;48) has an inlet (26) at least partially facing the base (46;51). The apparatus includes an apparatus (15;16) for passing a volume of fluid past the carrier (31;35;37;38;39) through the inlet (26) by subjecting the carrier (31;35;37;38;39) to a pulsed positive pressure differential relative to the dispersion chamber (17).
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: May 28, 2013
    Assignee: Malvern Instruments Incorporated
    Inventors: Nicholas Craig Davidson, Margaret Ellen Dyson, Jonathan Powell, Andrew John Prior
  • Publication number: 20100326213
    Abstract: An apparatus for dispersing a sample of particulate material, includes a carrier (31;35;37;38;39) having a sample-bearing surface on which to place the sample, and a housing (10;44;48) for forming a dispersion chamber (17), at least when closed off at a base (46;51). The carrier is arranged such that the sample-bearing surface is removed from contact with the sample upon application of a sufficient pressure differential across the carrier between the sample-bearing surface and an opposite side of the carrier. The housing (10;44;48) has an inlet (26) at least partially facing the base (46;51). The apparatus includes an apparatus (15;16) for passing a volume of fluid past the carrier (31;35;37;38;39) through the inlet (26) by subjecting the carrier (31;35;37;38;39) to a pulsed positive pressure differential relative to the dispersion chamber (17).
    Type: Application
    Filed: May 19, 2008
    Publication date: December 30, 2010
    Inventors: Nicholas Craig Davidson, Margaret Ellen Dyson, Jonathan Powell, Andrew John Prior
  • Publication number: 20100196394
    Abstract: Combinations of anti-cancer vaccines and inhibitory antibodies to CD223 overcome immune suppression in cancer patients. The vaccines may be isolated antigens, groups of antigens, or whole tumor cells. The inhibitory antibodies may be generated in an animal by injection of fragments of CD223. Antibodies may be monoclonal antibodies or single chain antibodies or humanized antibodies.
    Type: Application
    Filed: October 22, 2009
    Publication date: August 5, 2010
    Applicants: THE JOHNS HOPKINS UNIVERSITY, ST. JUDE CHILDREN'S RESEARCH HOSPITAL INC.
    Inventors: Drew M. Pardoll, Ching-Tai Huang, Dario A. Vignali, Creg J. Workman, Jonathan Powell, Charles C. Drake
  • Publication number: 20080005018
    Abstract: Systems and methods for implementing customized issuer-merchant relationships or programs in the payment-by-card industry are provided. The systems and methods utilize the multi-party bankcard networks common in the industry for processing card transactions, but provide direct connectivity between issuers and merchants bypassing merchant acquirers for processing card transactions covered by the customized issuer-merchant relationships.
    Type: Application
    Filed: February 2, 2007
    Publication date: January 3, 2008
    Inventor: Jonathan Powell
  • Publication number: 20060240024
    Abstract: Regulatory T cells (Treg) limit autoimmunity but can also attenuate the magnitude of anti-pathogen and anti-tumor immunity. Understanding the mechanism of Treg function and therapeutic manipulation of Treg in vivo requires identification of Treg selective receptors. A comparative analysis of gene expression arrays from antigen specific CD4+ T cells differentiating to either an effector/memory or a regulatory phenotype revealed Treg selective expression of LAG-3 (CD223), a CD4-related molecule that binds MHC class II. LAG-3 expression on CD4+ T cells correlates with the cells' in vitro suppressor activity, and ectopic expression of LAG-3 on CD4 T cells confers suppressor activity on the T cells. Antibodies to LAG-3 inhibit suppression both in vitro and in vivo. LAG-3 marks regulatory T cell populations and contributes to their suppressor activity.
    Type: Application
    Filed: March 1, 2004
    Publication date: October 26, 2006
    Applicants: The Johns Hopkins University, St Jude Children's Research Hospital Inc.
    Inventors: Drew Pardoll, Ching-Tai Huang, Dario Vignali, Creg Workman, Jonathan Powell, Charles Drake
  • Publication number: 20060206426
    Abstract: The present system and method seeks to lessen impacts of market fluctuations, transaction costs, and other detrimental factors associated with conventional dwelling purchases while seeking also to provide more options in selection of dwellings to choose from by the household seeking such a dwelling. An exemplary implementation involves an initial purchaser and a subsequent purchaser who execute a promise to purchase agreement. The process further involves an initial seller, a bank, and an escrow agent. In some implementations, the subsequent purchaser is a real estate brokerage company with one or more brokers being licensed as real estate agents. The promise to purchase agreement between the initial purchaser and the subsequent purchaser governs certain actions by the initial purchaser and other actions by the subsequent purchaser regarding a particular real estate property.
    Type: Application
    Filed: November 29, 2005
    Publication date: September 14, 2006
    Applicant: Certified Services Exchange, Inc.
    Inventor: Jonathan Powell
  • Publication number: 20050120497
    Abstract: The present invention relates to a disposable wipe for cleaning hard surfaces, comprising a cleaning substrate comprising a nonwoven material, the cleaning substrate having a longitudinal axis, an upper surface and a lower surface; and at least one attachment means; wherein said at least one attachment means is a pocket formed on the upper surface or the lower surface of said cleaning substrate, said pocket covering from about 2% to about 90% of the surface area of said upper surface, and having at least one opening. There is also provided a kit comprising the disposable cleaning wipe; and a cleaning implement comprising a mop head.
    Type: Application
    Filed: November 22, 2004
    Publication date: June 9, 2005
    Inventors: Kenton Lynde, Jonathan Powell, Neil Rogers, Nicola Policicchio, Christine Kurjan, Adrian James