Patents by Inventor Ayele H. Negussie

Ayele H. Negussie 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: 11672876
    Abstract: This invention concerns imageable, radiopaque embolic beads, which are particularly useful for monitoring embolization procedures. The beads comprise iodine containing compounds which are covalently incorporated into the polymer network of a preformed hydrogel bead. The beads are prepared by activating pre-formed hydrogel beads towards nucleophilic attack and then covalently attaching iodinated compounds into the polymer network. The radiopaque beads may be loaded with chemotherapeutic agents and used in methods of embolizing hyperplastic tissue or solid tumors.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: June 13, 2023
    Assignees: BIOCOMPATIBLES UK LIMITED, THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES
    Inventors: Matthew R. Dreher, Bradford J. Wood, Ayele H. Negussie, Andrew Lennard Lewis, Yiqing Tang
  • Patent number: 11382990
    Abstract: Described herein are X-ray imageable polymers such as polymeric particles comprising bismuth as a radiopacifying agent, methods of making the polymers, and methods of using the polymers. The imageable particles may comprise a covalently bound compound which chelates the bismuth, for example, through a combination of nitrogen and oxygen atoms.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: July 12, 2022
    Assignee: THE USA, AS REPRESENTED BY THE SECRETARY, DHHS
    Inventors: Ayele H. Negussie, Bradford Johns Wood
  • Publication number: 20200197540
    Abstract: Described herein are X-ray imageable polymers such as polymeric particles comprising bismuth as a radiopacifying agent, methods of making the polymers, and methods of using the polymers. The imageable particles may comprise a covalently bound compound which chelates the bismuth, for example, through a combination of nitrogen and oxygen atoms.
    Type: Application
    Filed: October 31, 2017
    Publication date: June 25, 2020
    Inventors: Ayele H. Negussie, Bradford Johns Wood
  • Publication number: 20200155711
    Abstract: This invention concerns imageable, radiopaque embolic beads, which are particularly useful for monitoring embolization procedures. The beads comprise iodine containing compounds which are covalently incorporated into the polymer network of a preformed hydrogel bead. The beads are prepared by activating pre-formed hydrogel beads towards nucleophilic attack and then covalently attaching iodinated compounds into the polymer network. The radiopaque beads may be loaded with chemotherapeutic agents and used in methods of embolizing hyperplastic tissue or solid tumors.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Inventors: Matthew R. DREHER, Bradford J. WOOD, Ayele H. NEGUSSIE, Andrew Lennard LEWIS, Yiqing TANG
  • Publication number: 20190328908
    Abstract: This invention concerns imageable, radiopaque embolic beads, which are particularly useful for monitoring embolization procedures. The beads comprise iodine containing compounds which are covalently incorporated into the polymer network of a preformed hydrogel bead. The beads are prepared by activating pre-formed hydrogel beads towards nucleophilic attack and then covalently attaching iodinated compounds into the polymer network. The radiopaque beads may be loaded with chemotherapeutic agents and used in methods of embolizing hyperplastic tissue or solid tumors.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 31, 2019
    Inventors: Matthew R. DREHER, Bradford J. WOOD, Ayele H. NEGUSSIE, Andrew Lennard LEWIS, Yiqing TANG
  • Patent number: 10307493
    Abstract: This invention concerns imageable, radiopaque embolic beads, which are particularly useful for monitoring embolization procedures. The beads comprise iodine containing compounds which are covalently incorporated into the polymer network of a preformed hydrogel bead. The beads are prepared by activating pre-formed hydrogel beads towards nucleophilic attack and then covalently attaching iodinated compounds into the polymer network. The radiopaque beads may be loaded with chemotherapeutic agents and used in methods of embolizing hyperplastic tissue or solid tumors.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: June 4, 2019
    Assignees: Biocompatible UK Limited, National Institutes of Health
    Inventors: Matthew R. Dreher, Bradford J. Wood, Ayele H. Negussie, Andrew Leonard Lewis, Yiqing Tang
  • Publication number: 20160030602
    Abstract: This invention concerns imageable, radiopaque embolic beads, which are particularly useful for monitoring embolization procedures. The beads comprise iodine containing compounds which are covalently incorporated into the polymer network of a preformed hydrogel bead. The beads are prepared by activating pre-formed hydrogel beads towards nucleophilic attack and then covalently attaching iodinated compounds into the polymer network. The radiopaque beads may be loaded with chemotherapeutic agents and used in methods of embolizing hyperplastic tissue or solid tumors.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 4, 2016
    Inventors: Matthew J. DREHER, Bradford J. WOOD, Ayele H. NEGUSSIE, Andrew Leonard LEWIS, Yiqing TANG
  • Patent number: 8636978
    Abstract: Cyclized peptide compounds containing the NGR motif of formula (I) or a pharmaceutically-acceptable salt thereof are disclosed. Compositions comprising the cyclized peptide compounds and methods of their use are also disclosed.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: January 28, 2014
    Assignee: The United States of America, as Represented by the Secretary, Department of Health and Human Services
    Inventors: Bradford J. Wood, Matthew Dreher, Ayele H. Negussie
  • Publication number: 20120141381
    Abstract: The invention comprises compositions and methods for loading both magnetic resonance contrast agents and therapeutic agents into liposomes, such as low temperature sensitive liposomes (LTSLs). In certain embodiments, a passive technique is used to load the liposomes. In other embodiments, an active technique is used to load the liposomes. In further embodiments, a magnetic resonance contrast agent and Doxorubicin are loaded into the liposomes. The liposome compositions have higher contrast-agent loadings and are more stable, than those known in the art.
    Type: Application
    Filed: February 23, 2010
    Publication date: June 7, 2012
    Applicant: Duke University Office of Technology & Venture
    Inventors: Mark W. Dewhirst, Pavel Yarmolenko, Bradford J. Wood, Matthrew R. Dreher, Ayele H. Negussie
  • Publication number: 20110200528
    Abstract: Cyclized peptide compounds containing the NGR motif of formula (I) or a pharmaceutically-acceptable salt thereof are disclosed. Compositions comprising the cyclized peptide compounds and methods of their use are also disclosed.
    Type: Application
    Filed: June 15, 2009
    Publication date: August 18, 2011
    Inventors: Bradford J. Wood, Matthew Dreher, Ayele H. Negussie