Patents by Inventor Grigor B. Bantchev

Grigor B. Bantchev 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: 9540264
    Abstract: We have now discovered a novel process for the removal or extraction of metal species from a variety of solid, liquid or gas phase materials. Metal species may be removed by contacting the material suspected of containing one or more metals with a thiolated fatty acid or ester thereof for a period of time and under conditions effective far the sequestration of the metal species by the thiolated fatty acid or ester thereof. The thiolated fatty acid or ester thereof comprising sequestered metal species may then be separated and recovered from the treated material. Moreover, following the treatment of aqueous liquids or mixtures, or suspensions or dispersions of solids in aqueous liquids, the resultant thiolated fatty acid or ester thereof comprising the sequestered metal species is insoluble in water and forms a separate layer from the aqueous liquid phase, which layer may be readily removed.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: January 10, 2017
    Assignee: The United States of America, as Represented by the Secretary of Agriculture
    Inventors: Rex E. Murray, Grigor B. Bantchev, Kenneth M. Doll, Robert O. Dunn, Kim L. Ascherl
  • Publication number: 20150336883
    Abstract: We have now discovered a novel process for the removal or extraction of metal species from a variety of solid, liquid or gas phase materials. Metal species may be removed by contacting the material suspected of containing one or more metals with a thiolated fatty acid or ester thereof for a period of time and under conditions effective far the sequestration of the metal species by the thiolated fatty acid or ester thereof. The thiolated fatty acid or ester thereof comprising sequestered metal species may then be separated and recovered from the treated material. Moreover, following the treatment of aqueous liquids or mixtures, or suspensions or dispersions of solids in aqueous liquids, the resultant thiolated fatty acid or ester thereof comprising the sequestered metal species is insoluble in water and forms a separate layer from the aqueous liquid phase, which layer may be readily removed.
    Type: Application
    Filed: August 3, 2015
    Publication date: November 26, 2015
    Inventors: Rex E. Murray, Grigor B. Bantchev, Kenneth M. Doll, Robert O. Dunn, Kim L. Ascherl
  • Patent number: 9126909
    Abstract: We have now discovered a novel process for the removal or extraction of metal species from a variety of solid, liquid or gas phase materials. Metal species may be removed by contacting the material suspected of containing one or more metals with a thiolated fatty acid or ester thereof for a period of time and under conditions effective for the sequestration of the metal species by the thiolated fatty acid or ester thereof. The thiolated fatty acid or ester thereof comprising sequestered metal species may then be separated and recovered from the treated material. Moreover, following the treatment of aqueous liquids or mixtures, or suspensions or dispersions of solids in aqueous liquids, the resultant thiolated fatty acid or ester thereof comprising the sequestered metal species is insoluble in water and forms a separate layer from the aqueous liquid phase, which layer may be readily removed.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 8, 2015
    Assignee: The United States of America, as represented by The Secretary of Agriculture
    Inventors: Rex E. Murray, Grigor B. Bantchev, Kenneth M. Doll, Robert O. Dunn, Kim L. Ascherl