Patents by Inventor Steven Fletcher

Steven Fletcher 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: 10961214
    Abstract: Newly synthesized derivatives of BAS00127538 have been discovered to possess antibiotic activity and to combat resistant bacterial strains. Compounds and pharmaceutical compositions containing these compounds are described, and are based on a generic scaffold structure. Synthetic methods and methods of using the compounds also are described. Preferred compound 6jc48-1 ((E)-2,4-bis(4-bromophenyl)-6-(4-(dimethyl-amino)styryl)pyrylium boron tetrafluoride salt) binds to Lipid II with high affinity, has markedly reduced cytotoxicity than BAS00127538, and retains activity against drug-resistant strains of Enterococci. It is stable in plasma, has dramatically improved pharmacokinetic and pharmacodynamics properties, and possesses in vivo efficacy in a mouse model of sepsis.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: March 30, 2021
    Assignee: UNIVERSITY OF MARYLAND, BALTIMORE
    Inventors: Erik de Leeuw, Alexander MacKerell, Steven Fletcher, Jamal Chauhan
  • Patent number: 10941114
    Abstract: Newly synthesized derivatives of BAS00127538 have been discovered to possess antibiotic activity and to combat resistant bacterial strains. Compounds and pharmaceutical compositions containing these compounds are described, and are based on a genetic scaffold structure. Synthetic methods and methods of using the compounds also are described. Preferred compounds bind to Lipid II with high affinity, have markedly reduced cytotoxicity compared to BAS00127538, and retain activity against drug-resistant strains of Enterococci. They are stable in plasma, have dramatically improved pharmacokinetic and pharmacodynamics properties, and possess in vivo efficacy in a mouse model of sepsis.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: March 9, 2021
    Assignee: University Of Maryland, Baltimore
    Inventors: Erik de Leeuw, Alexander MacKerell, Steven Fletcher, Jamal Chauhan
  • Patent number: 10858316
    Abstract: Compounds that inhibit Myeloid Cell Leukemia-1 (Mcl-1) oncoprotein, and methods of using the same, are provided for treating disease.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: December 8, 2020
    Assignee: UNIVERSITY OF MARYLAND, BALTIMORE
    Inventors: Steven Fletcher, Maryanna Lanning, Lijia Chen
  • Publication number: 20200331874
    Abstract: Compounds that inhibit p38? MAPK protein, and methods of using the same, are provided for treating or preventing diseases such as cancer or inflammatory diseases.
    Type: Application
    Filed: May 11, 2020
    Publication date: October 22, 2020
    Inventors: Paul S. SHAPIRO, Alexander D. MACKERELL, JR., Jeffrey D. HASDAY, Steven FLETCHER
  • Publication number: 20200299285
    Abstract: Mcl-1 selective inhibitors, Bcl-2 selective inhibitors, and Mcl-1/Bcl-2 dual inhibitors and methods of using the same for the treatment of disease are disclosed.
    Type: Application
    Filed: March 20, 2020
    Publication date: September 24, 2020
    Inventors: Steven Fletcher, Brandon Drennen
  • Publication number: 20200283417
    Abstract: The invention relates to new amino dimeric naphthoquinone compounds with antileukemic activity. Compounds of the invention demonstrated increased aqueous solubility compared to previously available dimeric naphthoquinones and potent nanomolar inhibition of cell survival in AML cells. Preferred compounds contained an aziridine or a secondary amino alcohol pharmacophore.
    Type: Application
    Filed: October 5, 2017
    Publication date: September 10, 2020
    Inventors: Ashkan Emadi, Rena G. Lapidus, Brandon A. Carter-Cooper, Steven Fletcher, Dana Ferraris, Edward A. Sausville
  • Publication number: 20200277954
    Abstract: A pendulum pump includes a housing, a cover positioned on the housing and forming a cavity therebetween, an inner rotor and an outer rotor positioned within the cavity, wherein the inner rotor is connected via a plurality of pendulums to the outer rotor, and the pendulums are mounted to the outer rotor in an articulated manner such that a rotational eccentricity can be imparted between the inner rotor and the outer rotor to control a flow rate of the pendulum pump, and a protective plate positioned within the cavity and against a surface of one of the housing and the cover.
    Type: Application
    Filed: March 1, 2019
    Publication date: September 3, 2020
    Inventors: Liviu Marinica, Mihajlo Soc, Steven Fletcher, Adam Rossetto
  • Publication number: 20200216394
    Abstract: Newly synthesized derivatives of BAS00127538 have been discovered to possess antibiotic activity and to combat resistant bacterial strains. Compounds and pharmaceutical compositions containing these compounds are described, and are based on a generic scaffold structure. Synthetic methods and methods of using the compounds also are described. Preferred compounds bind to Lipid II with high affinity, have markedly reduced cytotoxicity compared to BAS00127538, and retain activity against drug-resistant strains of Enterococci. They are stable in plasma, have dramatically improved pharmacokinetic and pharmacodynamics properties, and possess in vivo efficacy in a mouse model of sepsis.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 9, 2020
    Inventors: Erik de Leeuw, Alexander MacKerell, Steven Fletcher, Jamal Chauhan
  • Patent number: 10591517
    Abstract: An electrical fault detector is shown for installation in electrical network (101) of the type comprising a first voltage source (104) and a second voltage source (107), each of which have a respective positive rail (105,108) connected by a positive concentrator (110) and a respective negative rail (106,109) connected by a negative concentrator (111). The detector comprises an inductor (112) for location in one of: the positive concentrator between the connections of the positive rails thereto, and the negative concentrator between the connections of the negative rails to thereto. The detector also comprises a fault identification device (113) configured to monitor the voltage across the inductor, and generate a fault signal in response to the voltage across the inductor exceeding a threshold.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: March 17, 2020
    Assignee: ROLLS-ROYCE PLC
    Inventors: Steven Fletcher, Stuart J. Galloway, Patrick Norman
  • Publication number: 20190358232
    Abstract: Compounds, pharmaceutical compositions, and methods for reversing fosfomycin resistance are disclosed. Embodiments of the disclosed compounds inhibit fosfomycin-inhibiting enzymes. Some embodiments of the compounds are FosA inhibitors. The disclosed pharmaceutical compositions include (i) fosfomycin or a pharmaceutically acceptable salt thereof and (ii) a compound, or a pharmaceutically acceptable salt thereof, which inhibits a fosfomycin-inhibiting enzyme. A method of inhibiting growth of a fosfomycin-resistant bacterium includes contacting the bacterium with (i) fosfomycin or a pharmaceutically acceptable salt thereof and (ii) an effective amount of a disclosed compound or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: January 11, 2018
    Publication date: November 28, 2019
    Applicants: University of Pittsburgh - Of the Commonwealth System of Higher Education, University of Maryland, Baltimore
    Inventors: Nicolas Paul Sluis-Cremer, Adam Daniel Tomich, Yohei Doi, Eric J. Sundberg, Erik H. Klontz, Steven Fletcher
  • Publication number: 20190002426
    Abstract: Newly synthesized derivatives of BAS00127538 have been discovered to possess antibiotic activity and to combat resistant bacterial strains. Compounds and pharmaceutical compositions containing these compounds are described, and are based on a generic scaffold structure. Synthetic methods and methods of using the compounds also are described. Preferred compound 6jc48-1 ((E)-2,4-bis(4-bromophenyl)-6-(4-(dimethyl-amino)styryl)pyrylium boron tetrafluoride salt) binds to Lipid II with high affinity, has markedly reduced cytotoxicity than BAS00127538, and retains activity against drug-resistant strains of Enterococci. It is stable in plasma, has dramatically improved pharmacokinetic and pharmacodynamics properties, and possesses in vivo efficacy in a mouse model of sepsis.
    Type: Application
    Filed: December 20, 2016
    Publication date: January 3, 2019
    Inventors: Erik de Leeuw, Alexander MacKerell, Steven Fletcher, Jamal Chauhan
  • Publication number: 20180208554
    Abstract: Compounds that inhibit Myeloid Cell Leukemia-1 (Mcl-1) oncoprotein, and methods of using the same, are provided for treating disease.
    Type: Application
    Filed: July 8, 2016
    Publication date: July 26, 2018
    Inventors: Steven Fletcher, Maryanna Lanning, Lijia Chen
  • Publication number: 20180080962
    Abstract: An electrical fault detector is shown for installation in electrical network (101) of the type comprising a first voltage source (104) and a second voltage source (107), each of which have a respective positive rail (105,108) connected by a positive concentrator (110) and a respective negative rail (106,109) connected by a negative concentrator (111). The detector comprises an inductor (112) for location in one of: the positive concentrator between the connections of the positive rails thereto, and the negative concentrator between the connections of the negative rails to thereto. The detector also comprises a fault identification device (113) configured to monitor the voltage across the inductor, and generate a fault signal in response to the voltage across the inductor exceeding a threshold.
    Type: Application
    Filed: September 8, 2017
    Publication date: March 22, 2018
    Applicant: ROLLS-ROYCE plc
    Inventors: Steven FLETCHER, Stuart J. GALLOWAY, Patrick NORMAN
  • Patent number: 9863998
    Abstract: A method of determining the location of a fault within a first inductive part of an electrical circuit, including a voltage source, first inductive part and second inductive part. A shortened circuit created by the fault includes the voltage source, a portion of the first inductive part and the second, connected in series. The fault occurs across first and second points in the first inductive part. The length of first inductive part between a positive terminal and first point is substantially equal to the length of first inductive part between a negative terminal and second point. The voltage source supplies a known voltage Vs when the fault occurs and the second inductive part has a known inductance L2 when the fault occurs. The method takes advantage of the initial transient response of the circuit to determine the inductance of the portion of the first inductive part in the shortened circuit.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: January 9, 2018
    Assignee: ROLLS-ROYCE plc
    Inventors: Steven Fletcher, Patrick Norman, Stuart J Galloway
  • Publication number: 20170176510
    Abstract: A method of determining the location of a fault within a first inductive part of an electrical circuit, including a voltage source, first inductive part and second inductive part. A shortened circuit created by the fault includes the voltage source, a portion of the first inductive part and the second, connected in series. The fault occurs across first and second points in the first inductive part. The length of first inductive part between a positive terminal and first point is substantially equal to the length of first inductive part between a negative terminal and second point. The voltage source supplies a known voltage Vs when the fault occurs and the second inductive part has a known inductance L2 when the fault occurs. The method takes advantage of the initial transient response of the circuit to determine the inductance of the portion of the first inductive part in the shortened circuit.
    Type: Application
    Filed: November 22, 2016
    Publication date: June 22, 2017
    Applicant: ROLLS-ROYCE plc
    Inventors: Steven FLETCHER, Patrick NORMAN, Stuart J. GALLOWAY
  • Patent number: 9242944
    Abstract: The present invention relates compounds and compositions for interfering with the association of Myc and Max. These compounds and compositions are useful in methods for inhibiting growth or proliferation of a cell. Methods of inhibiting growth or proliferation of a cell comprise contacting the cell with an amount of a compound that interferes with Myc and Max association effective to inhibit growth or proliferation of the cell. The compounds exhibit increased inhibitory activity against c-Myc relative to the known c-Myc inhibitor small-molecule benzofurazan N-([1,1?-biphenyl]-2-yl)-7-nitrobenzo[c][1,2,5]oxadiazol-4-amine (10074-G5).
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: January 26, 2016
    Assignee: UNIVERSITY OF MARYLAND, BALTIMORE
    Inventor: Steven Fletcher
  • Patent number: 9115122
    Abstract: A compound, having the formula A-1: Wherein R1 and R2 are defined herein. Methods of using the compound and compositions containing the compound are provided.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: August 25, 2015
    Assignee: UNIVERSITY OF MARYLAND, BALTIMORE
    Inventors: Paul S. Shapiro, Alexander D. MacKerell, Jr., Steven Fletcher
  • Patent number: 8901164
    Abstract: Small-molecule scaffolds based on 1,2-diphenylacetylene that accurately replicate the spatial and angular projections of several side chains on both faces of an ?-helix, specifically the i and i+7 side chains on one face, and the i and i+2 side chains on the other. The amphipathic ?-helix mimetic can be used to disrupt disease-promoting protein-protein interactions that are mediated by ?-helices.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: December 2, 2014
    Assignee: University of Maryland, Baltimore
    Inventor: Steven Fletcher
  • Publication number: 20140296307
    Abstract: The present invention relates compounds and compositions for interfering with the association of Myc and Max. These compounds and compositions are useful in methods for inhibiting growth or proliferation of a cell. Methods of inhibiting growth or proliferation of a cell comprise contacting the cell with an amount of a compound that interferes with Myc and Max association effective to inhibit growth or proliferation of the cell. The compounds exhibit increased inhibitory activity against c-Myc relative to the known c-Myc inhibitor small-molecule benzofurazan N-([1,1?-biphenyl]-2-yl)-7-nitrobenzo[c][1,2,5]oxadiazol-4-amine (10074-G5).
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: University of Maryland, Baltimore
    Inventor: STEVEN FLETCHER
  • Publication number: 20140256817
    Abstract: Small-molecule scaffolds based on 1,2-diphenylacetylene that accurately replicate the spatial and angular projections of several side chains on both faces of an ?-helix, specifically the i and i+7 side chains on one face, and the i and i+2 side chains on the other. The amphipathic ?-helix mimetic can be used to disrupt disease-promoting protein-protein interactions that are mediated by ?-helices.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 11, 2014
    Applicant: UNIVERSITY OF MARYLAND, BALTIMORE
    Inventor: Steven FLETCHER