Patents by Inventor Robert W. Atcher

Robert W. Atcher 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: 7728310
    Abstract: The present invention is directed to a generator apparatus for separating a daughter gallium-68 radioisotope substantially free of impurities from a parent gernanium-68 radioisotope, including a first resin-containing column containing parent gernanium-68 radioisotope and daughter gallium-68 radioisotope, a source of first eluent connected to said first resin-containing column for separating daughter gallium-68 radioisotope from the first resin-containing column, said first eluent including citrate whereby the separated gallium is in the form of gallium citrate, a mixing space connected to said first resin-containing column for admixing a source of hydrochloric acid with said separated gallium citrate whereby gallium citrate is converted to gallium tetrachloride, a second resin-containing column for retention of gallium-68 tetrachloride, and, a source of second eluent connected to said second resin-containing column for eluting the daughter gallium-68 radioisotope from said second resin-containing column.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: June 1, 2010
    Assignee: Los Alamos National Security, LLC
    Inventors: Jonathan M. Fitzsimmons, Robert W. Atcher
  • Patent number: 7556863
    Abstract: A process of preparing gold-coated magnetic nanoparticles is disclosed and includes forming a suspension of magnetic nanoparticles within a suitable liquid, adding an amount of a reducible gold compound and a reducing agent to the suspension, and, maintaining the suspension for time sufficient to form gold-coated magnetic nanoparticles.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: July 7, 2009
    Assignee: Los Alamos National Security, LLC
    Inventors: Douglas E. Berning, Robert H. Kraus, Jr., Robert W. Atcher, Jurgen G. Schmidt
  • Publication number: 20090001283
    Abstract: The present invention is directed to a generator apparatus for separating a daughter gallium-68 radioisotope substantially free of impurities from a parent gernanium-68 radioisotope, including a first resin-containing column containing parent gernanium-68 radioisotope and daughter gallium-68 radioisotope, a source of first eluent connected to said first resin-containing column for separating daughter gallium-68 radioisotope from the first resin-containing column, said first eluent including citrate whereby the separated gallium is in the form of gallium citrate, a mixing space connected to said first resin-containing column for admixing a source of hydrochloric acid with said separated gallium citrate whereby gallium citrate is converted to gallium tetrachloride, a second resin-containing column for retention of gallium-68 tetrachloride, and, a source of second eluent connected to said second resin-containing column for eluting the daughter gallium-68 radioisotope from said second resin-containing column.
    Type: Application
    Filed: May 8, 2008
    Publication date: January 1, 2009
    Inventors: Jonathan M. Fitzsimmons, Robert W. Atcher
  • Publication number: 20080305337
    Abstract: A process of preparing gold-coated magnetic nanoparticles is disclosed and includes forming a suspension of magnetic nanoparticles within a suitable liquid, adding an amount of a reducible gold compound and a reducing agent to the suspension, and, maintaining the suspension for time sufficient to form gold-coated magnetic nanoparticles.
    Type: Application
    Filed: June 5, 2007
    Publication date: December 11, 2008
    Inventors: Douglas E. Berning, Robert H. Kraus, JR., Robert W. Atcher, Jurgen G. Schmidt
  • Patent number: 7226636
    Abstract: A process of preparing gold-coated magnetic nanoparticles is disclosed and includes forming a suspension of magnetic nanoparticles within a suitable liquid, adding an amount of a reducible gold compound and a reducing agent to the suspension, and, maintaining the suspension for time sufficient to form gold-coated magnetic nanoparticles.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: June 5, 2007
    Assignee: Los Alamos National Security, LLC
    Inventors: Douglas E. Berning, Robert H. Kraus, Jr., Robert W. Atcher, Jurgen G. Schmidt
  • Patent number: 5085848
    Abstract: A ferric hydroxide colloid having an alpha-emitting radionuclide essentially on the outer surfaces and a method of forming same. The method includes oxidizing a ferrous hydroxide to ferric hydroxide in the presence of a preselected radionuclide to form a colloid having the radionuclide on the outer surface thereof, and thereafter washing the colloid, and suspending the washed colloid in a suitable solution. The labelled colloid is useful in cancer therapy and for the treatment of inflamed joints.
    Type: Grant
    Filed: April 16, 1991
    Date of Patent: February 4, 1992
    Assignee: The United States of America as Represented by the United States Department of Energy
    Inventors: Robert W. Atcher, John J. Hines
  • Patent number: 5030441
    Abstract: A ferric hydroxide colloid having an alpha-emitting radionuclide essentially on the outer surfaces and a method of forming same. The method includes oxidizing a ferrous hydroxide to ferric hydroxide in the presence of a preselected radionuclide to form a colloid having the radionuclide on the outer surface thereof, and thereafter washing the colloid, and suspending the washed colloid in a suitable solution. The labelled colloid is useful in cancer therapy and for the treatment of inflamed joints.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: July 9, 1991
    Assignee: The United State of America as represented by the United States Department of Energy
    Inventors: Robert W. Atcher, John J. Hines
  • Patent number: 4970062
    Abstract: A ferric hydroxide colloid having an alpha-emitting radionuclide essentially on the outer surfaces and a method of forming same. The method includes oxidizing a ferrous hydroxide to ferric hydroxide in the presence of a preselected radionuclide to form a colloid having the radionuclide on the outer surface thereof, and thereafter washing the colloid, and suspending the washed colloid in a suitable solution. The labelled colloid is useful in cancer therapy and for the treatment of inflamed joints.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: November 13, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert W. Atcher, John J. Hines
  • Patent number: 4663129
    Abstract: A method and apparatus for providing radionuclides of bismuth-212 and lead-212. Thorium-228 and carrier solution starting material is input to a radiologically contained portion of an isotopic generator system, and radium-224 is separated from thorium-228 which is retained by a strongly basic anion exchange column. The separated radium-224 is transferred to an accessible, strongly acidic cationic exchange column. The cationic column retains the radium-224, and natural radioactive decay generates bismuth-212 and lead-212. The cationic exchange column can also be separated from the contained portion of the system and utilized without the extraordinary safety measures necessary in the contained portion. Furthermore, the cationic exchange column provides over a relatively long time period the short lived lead-212 and bismuth-212 radionuclides which are useful for a variety of medical therapies.
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: May 5, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert W. Atcher, Arnold M. Friedman, John Hines