Patents by Inventor Igor V. Smirnov

Igor V. Smirnov 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).

  • Method of stripping metals from organic solvents
    Patent number: 7494630
    Abstract: A new method to strip metals from organic solvents in a manner that allows for the recycle of the stripping agent. The method utilizes carbonate solutions of organic amines with complexants, in low concentrations, to strip metals from organic solvents. The method allows for the distillation and reuse of organic amines. The concentrated metal/complexant fraction from distillation is more amenable to immobilization than solutions resulting from current practice.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: February 24, 2009
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Terry A. Todd, Jack D. Law, R. Scott Herbst, Valeriy N. Romanovskiy, Igor V. Smirnov, Vasily A. Babain, Vyatcheslav M. Esimantovski
  • Method for removing inorganic matter from solid surfaces
    Patent number: 6610152
    Abstract: Metal ions are removed from solid surfaces which may be contaminated with one or more radionuclides by contacting the solid surfaces with the supercritical fluid, as, for instance, carbon dioxide containing both an acidic ligand and organic amine. The metal ions are extracted from the solid surface and the extract is separated from the solid surface.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: August 26, 2003
    Assignee: British Nuclear Fuels PLC
    Inventors: Vassily A. Babain, Andrey A. Murzin, Igor V. Smirnov, Vadim A. Starchenko, Andrey Y. Shadrin, Neil Graham Smart
  • Solvent for the simultaneous recovery of radionuclides from liquid radioactive wastes
    Patent number: 6468445
    Abstract: The present invention relates to solvents, and methods, for selectively extracting and recovering radionuclides, especially cesium and strontium, rare earths and actinides from liquid radioactive wastes. More specifically, the invention relates to extracting agent solvent compositions comprising complex organoboron compounds, substituted polyethylene glycols, and neutral organophosphorus compounds in a diluent. The preferred solvent comprises a chlorinated cobalt dicarbollide, diphenyl-dibutylmethylenecarbamoylphosphine oxide, PEG-400, and a diluent of phenylpolyfluoroalkyl sulfone. The invention also provides a method of using the invention extracting agents to recover cesium, strontium, rare earths and actinides from liquid radioactive waste.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: October 22, 2002
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Valeriy Nicholiavich Romanovskiy, Igor V. Smirnov, Vasiliy A. Babain, Terry A. Todd, Ken N. Brewer
  • Novel solvent for the simultaneous recovery of radionuclides from liquid radioactive wastes
    Publication number: 20010033814
    Abstract: The present invention relates to solvents, and methods, for selectively extracting and recovering radionuclides, especially cesium and strontium, rare earths and actinides from liquid radioactive wastes. More specifically, the invention relates to extracting agent solvent compositions comprising complex organoboron compounds, substituted polyethylene glycols, and neutral organophosphorus compounds in a diluent. The preferred solvent comprises a chlorinated cobalt dicarbollide, diphenyl-dibutylmethylenecarbamoylphosphine oxide, PEG-400, and a diluent of phenylpolyfluoroalkyl sulfone. The invention also provides a method of using the invention extracting agents to recover cesium, strontium, rare earths and actinides from liquid radioactive waste.
    Type: Application
    Filed: April 27, 2001
    Publication date: October 25, 2001
    Inventors: Valeriy Nicholiavich Romanovskiy, Igor V. Smirnov, Vasiliy A. Babain, Terry A. Todd, Ken N. Brewer
  • Method for the simultaneous recovery of radionuclides from liquid radioactive wastes using a solvent
    Patent number: 6258333
    Abstract: The present invention relates to solvents, and methods, for selectively extracting and recovering radionuclides, especially cesium and strontium, rare earths and actinides from liquid radioactive wastes. More specifically, the invention relates to extracting agent solvent compositions comprising complex organoboron compounds, substituted polyethylene glycols, and neutral organophosphorus compounds in a diluent. The preferred solvent comprises a chlorinated cobalt dicarbollide, diphenyl-dibutylmethylenecarbamoylphosphine oxide, PEG-400, and a diluent of phenylpolyfluoroalkyl sulfone. The invention also provides a method of using the invention extracting agents to recover cesium, strontium, rare earths and actinides from liquid radioactive waste.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: July 10, 2001
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Valeriy Nicholiavich Romanovskiy, Igor V. Smirnov, Vasiliy A. Babain, Terry A. Todd, Ken N. Brewer