Patents by Inventor Ross Wentworth Stephens

Ross Wentworth Stephens 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: 11896683
    Abstract: The invention relates to a radiolabelled material comprising a polymer, a radioactive isotope, and an immobilizing agent, wherein the immobilizing agent is capable of immobilizing the radioactive isotope on or in the polymer, and wherein the immobilizing agent is a macromolecule comprising a polycation with multiple pendant metal-chelating side-chains. The invention also relates to a process for making a radiolabelled material, to use of a radiolabelled material for the preparation of medicaments for treating cancer and/or for radiation imaging and to use of a radiolabelled material in the treatment of cancer. There is further described use of an immobilizing agent to immobilize a radioactive isotope on or in a polymer.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: February 13, 2024
    Assignee: THE AUSTRALIAN NATIONAL UNIVERSITY
    Inventors: Ross Wentworth Stephens, Gregory David Tredwell, Karen Joanne Knox, Lee Andrew Philip, Rebecca Greenlees, Keira Beattie
  • Publication number: 20200038528
    Abstract: The invention relates to a radiolabelled material comprising a polymer, a radioactive isotope, and an immobilizing agent, wherein the immobilizing agent is capable of immobilizing the radioactive isotope on or in the polymer, and wherein the immobilizing agent is a macromolecule comprising a polycation with multiple pendant metal-chelating side-chains. The invention also relates to a process for making a radiolabelled material, to use of a radiolabelled material for the preparation of medicaments for treating cancer and/or for radiation imaging and to use of a radiolabelled material in the treatment of cancer. There is further described use of an immobilizing agent to immobilize a radioactive isotope on or in a polymer.
    Type: Application
    Filed: December 15, 2017
    Publication date: February 6, 2020
    Inventors: Ross Wentworth Stephens, Gregory David Tredwell, Karen Joanne Knox, Lee Andrew Philip, Rebecca Greenlees, Keira Beattie
  • Patent number: 10232062
    Abstract: The invention relates to a radiolabelled material comprising a polymer, a radioactive isotope, and an immobilizing agent, wherein the immobilizing agent is capable of immobilizing the radioactive isotope on or in the polymer, and wherein the immobilizing agent is a macromolecule comprising electron donating groups. The invention also relates to a process for making a radiolabelled material, to use of a radiolabelled material for the preparation of medicaments for treating cancer and/or for radiation imaging, and to use of a radiolabelled material in the treatment of cancer. There is further described use of an immobilizing agent to immobilize a radioactive isotope on or in a polymer.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: March 19, 2019
    Assignee: The Australian National University
    Inventors: Ross Wentworth Stephens, Jessica Louise Bell
  • Patent number: 9381262
    Abstract: The present invention relates to a method for preparing a radiolabeled synthetic polymer, the method comprising contacting a synthetic polymer with a carbon encapsulated nanoparticle composite having a radioactive particulate core in an aqueous medium comprising an electrolyte concentration or pH selected to promote short-range attractive forces between the nanoparticles and the synthetic polymer by attenuating long-range electrostatic repulsive forces.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: July 5, 2016
    Assignee: The Australian National University
    Inventors: Ross Wentworth Stephens, Timothy John Senden, David Wallace King
  • Patent number: 9283291
    Abstract: The present invention relates to a method for preparing a radiolabeled macromolecule, the method comprising contacting a macromolecule with a carbon encapsulated nanoparticle composite having a radioactive particulate core in an aqueous medium comprising a pH selected to promote short-range attractive forces between the nanoparticles and the macromolecule by attenuating repulsive electrostatic forces.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: March 15, 2016
    Assignee: The Australian National University
    Inventors: Ross Wentworth Stephens, Timothy John Senden, David Wallace King
  • Patent number: 9226939
    Abstract: The invention relates to a method of inhibiting the cytotoxic activity of extracellular histones in a subject, comprising administering an effective amount of a polyanion to the subject. In particular the invention relates to a method for the treatment of patients who are suffering from sepsis and employs polyanions to rapidly form complexes with and thus neutralize or inhibit the cytotoxic activity of extracellular histone proteins, for example, those found in the blood circulation of sepsis patients.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: January 5, 2016
    Assignee: THE AUSTRALIAN NATIONAL UNIVERSITY
    Inventors: Ross Wentworth Stephens, Christopher Richard Parish, Craig Geoffrey Freeman, Timothy John Senden
  • Patent number: 8778300
    Abstract: A method of forming an injectable radioactive composition, the method comprising the steps of: (a) depositing a solid form of technetium onto a carbon crucible; (b) preheating the solid form of technetium to remove any carrier; (c) plasma ablating the technetium and portions of the carbon crucible; (d) allowing the carbon and technetium metal to co-condense from the gas phase to produce a nanoparticle composite aerosol in an inert gas; (e) dispersing the nanoparticle composite in water containing a low concentration of surfactant using an electrostatic precipitator; (f) size fractionating the nanoparticle dispersion by filtration with hydrophilic membranes of known pore size.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: July 15, 2014
    Assignee: The Australian National University
    Inventors: William Martin Burch, Timothy John Senden, Ross Wentworth Stephens, Beverley Ann Browitt
  • Publication number: 20130338097
    Abstract: The invention relates to a method of inhibiting the cytotoxic activity of extracellular histones in a subject, comprising administering an effective amount of a polyanion to the subject. In particular the invention relates to a method for the treatment of patients who are suffering from sepsis and employs polyanions to rapidly form complexes with and thus neutralize or inhibit the cytotoxic activity of extracellular histone proteins, for example, those found in the blood circulation of sepsis patients.
    Type: Application
    Filed: November 29, 2011
    Publication date: December 19, 2013
    Applicant: THE AUSTRALIAN NATIONAL UNIVERSITY
    Inventors: Ross Wentworth Stephens, Christopher Richard Parish, Craig Geoffrey Freeman, Timothy John Senden
  • Publication number: 20110165070
    Abstract: The present invention relates to a method for preparing a radiolabeled synthetic polymer, the method comprising contacting a synthetic polymer with a carbon encapsulated nanoparticle composite having a radioactive particulate core in an aqueous medium comprising an electrolyte concentration or pH selected to promote short-range attractive forces between the nanoparticles and the synthetic polymer by attenuating long-range electrostatic repulsive forces.
    Type: Application
    Filed: April 23, 2009
    Publication date: July 7, 2011
    Applicant: The Australian National University
    Inventors: Ross Wentworth Stephens, Timothy John Senden, David Wallace King
  • Publication number: 20110165069
    Abstract: The present invention relates to a method for preparing a radiolabeled macromolecule, the method comprising contacting a macromolecule with a carbon encapsulated nanoparticle composite having a radioactive particulate core in an aqueous medium comprising a pH selected to promote short-range attractive forces between the nanoparticles and the macromolecule by attenuating repulsive electrostatic forces.
    Type: Application
    Filed: April 23, 2009
    Publication date: July 7, 2011
    Applicant: The Australian National University
    Inventors: Ross Wentworth Stephens, Timothy John Senden, David Wallace King
  • Publication number: 20110002847
    Abstract: A method of forming an injectable radioactive composition, the method comprising the steps of: (a) depositing a solid form of technetium onto a carbon crucible; (b) preheating the solid form of technetium to remove any carrier; (c) plasma ablating the technetium and portions of the carbon crucible; (d) allowing the carbon and technetium metal to co-condense from the gas phase to produce a nanoparticle composite aerosol in an inert gas; (e) dispersing the nanoparticle composite in water containing a low concentration of surfactant using an electrostatic precipitator; (f) size fractionating the nanoparticle dispersion by filtration with hydrophilic membranes of known pore size.
    Type: Application
    Filed: April 28, 2006
    Publication date: January 6, 2011
    Applicant: The Australian National University
    Inventors: Rodney James Browitt, Beverley Ann Browitt, William Martin Burch, Timothy John Senden, Ross Wentworth Stephens
  • Patent number: 7722856
    Abstract: A method for forming an inhalable isotope compound suitable for use in patient medical diagnosis, the method comprising the steps of: (a) electrolytic loading of a carbon crucible with the isotope; (b) sublimating any isotope carrier in the crucible; (c) ablating the isotope in a carbon crucible, forming an ablation aerosol; (d) directly delivering the aerosol for immediate use by a patient. The isotope can comprise technetium.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: May 25, 2010
    Assignee: Cyclomedica Australia Pty Limited
    Inventors: Rodney James Browitt, William Martin Burch, Timothy John Senden, Ross Wentworth Stephens, David DeForest Shaw
  • Patent number: 5962418
    Abstract: The present invention relates to compounds comprising the amino acid sequences of the formulae (IA): -CVNENGGCEQYCSD-, (IB): -FCLPAFEGRNCE- and/or (IC): -RCHEGYSLLADGVSCT- as well as peptide fragments thereof, esters, amides, salts and cyclic derivatives thereof, functional analogues thereof and extended peptide chains carrying amino acids or peptides at the termini of the above sequences or fragments, for use in the prevention or inhibition of binding of tissue factor to FVII.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: October 5, 1999
    Assignee: Nycomed Imaging A/S
    Inventors: Kjell Steinar Sakariassen, Ross Wentworth Stephens, Lars Orning