Patents by Inventor Ann E. Visser

Ann E. Visser 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).

  • Nanoparticle enhanced ionic liquid heat transfer fluids
    Patent number: 8801957
    Abstract: A heat transfer fluid created from nanoparticles that are dispersed into an ionic liquid is provided. Small volumes of nanoparticles are created from e.g., metals or metal oxides and/or alloys of such materials are dispersed into ionic liquids to create a heat transfer fluid. The nanoparticles can be dispersed directly into the ionic liquid during nanoparticle formation or the nanoparticles can be formed and then, in a subsequent step, dispersed into the ionic liquid using e.g., agitation.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: August 12, 2014
    Assignee: Savannah River Nuclear Solutions, LLC
    Inventors: Elise B. Fox, Ann E. Visser, Nicholas J. Bridges, Joshua R. Gray, Brenda L. Garcia-Diaz
  • Ionic liquids as templating agents in formation of uranium-containing nanomaterials
    Patent number: 8747786
    Abstract: A method for forming nanoparticles containing uranium oxide is described. The method includes combining a uranium-containing feedstock with an ionic liquid to form a mixture and holding the mixture at an elevated temperature for a period of time to form the product nanoparticles. The method can be carried out at low temperatures, for instance less than about 300° C.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: June 10, 2014
    Assignee: Savannah River Nuclear Solutions, LLC
    Inventors: Ann E. Visser, Nicholas J. Bridges
  • IONIC LIQUIDS AS TEMPLATING AGENTS IN FORMATION OF URANIUM-CONTAINING NANOMATERIALS
    Publication number: 20140070434
    Abstract: A method for forming nanoparticles containing uranium oxide is described. The method includes combining a uranium-containing feedstock with an ionic liquid to form a mixture and holding the mixture at an elevated temperature for a period of time to form the product nanoparticles. The method can be carried out at low temperatures, for instance less than about 300° C.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 13, 2014
    Applicant: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC
    Inventors: Ann E. VISSER, Nicholas J. BRIDGES
  • NANOPARTICLE ENHANCED IONIC LIQUID HEAT TRANSFER FLUIDS
    Publication number: 20130068994
    Abstract: A heat transfer fluid created from nanoparticles that are dispersed into an ionic liquid is provided. Small volumes of nanoparticles are created from e.g., metals or metal oxides and/or alloys of such materials are dispersed into ionic liquids to create a heat transfer fluid. The nanoparticles can be dispersed directly into the ionic liquid during nanoparticle formation or the nanoparticles can be formed and then, in a subsequent step, dispersed into the ionic liquid using e.g., agitation.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Applicant: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC
    Inventors: Elise B. Fox, Ann E. Visser, Nicholas J. Bridges, Joshua R. Gray, Brenda L. Garcia-Diaz