Patents by Inventor Nigel J. Robinson

Nigel J. Robinson 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).

  • Compositions containing poly (.gamma.-glutamylcysteinyl)glycines
    Patent number: 5089470
    Abstract: A method of removing heavy metals from aqueous solution, a composition of matter used in effecting said removal, and apparatus used in effecting said removal. One or more of the polypeptides, poly (.gamma.-glutamylcysteinyl)glycines, is immobilized on an inert material in particulate form. Upon contact with an aqueous solution containing heavy metals, the polypeptides sequester the metals, removing them from the solution. There is selectivity of poly (.gamma.-glutamylcysteinyl)glycines having a particular number of monomer repeat units for particular metals. The polypeptides are easily regenerated by contact with a small amount of an organic acid, so that they can be used again to remove heavy metals from solution. This also results in the removal of the metals from the column in a concentrated form.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: February 18, 1992
    Assignee: The United State of America as represented by the United States Department of Energy
    Inventors: Paul J. Jackson, Emmanuel Delhaize, Nigel J. Robinson, Clifford J. Unkefer, Clement Furlong
  • Removal of metal ions from aqueous solution
    Patent number: 4969995
    Abstract: A method of removing heavy metals from aqueous solution, a composition of matter used in effecting said removal, and apparatus used in effecting said removal. One or more of the polypeptides, poly (.gamma.-glutamylcysteinyl)glycines, is immobilized on an inert material in particulate form. Upon contact with an aqueous solution containing heavy metals, the polypeptides sequester the metals, removing them from the solution. There is selectivity of poly (.gamma.-glutamylcysteinyl)glycines having a particular number of monomer repeat unit for particular metals. The polypeptides are easily regenerated by contact with a small amount of an organic acid, so that they can be used again to remove heayv metals from solution. This also results in the removal of the metals from the column in a concentrated form.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: November 13, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Paul J. Jackson, Emmanuel Delhaize, Nigel J. Robinson, Clifford J. Unkefer, Clement Furlong
  • Removal of metal ions from aqueous solution
    Patent number: 4909944
    Abstract: A method of removing heavy metals from aqueous solution, a composition of matter used in effecting said removal, and apparatus used in effecting said removal. One or more of the polypeptides, poly (.gamma.-glutamylcysteinyl)glycines, is immobilized on an inert material in particulate form. Upon contact with an aqueous solution containing heavy metals, the polypeptides sequester the metals, removing them from the solution. There is selectivity of poly (.gamma.-glutamylcysteinyl)glycines having a particular number of monomer repeat units for particular metals. The polypeptides are easily regenerated by contact with a small amount of an organic acid, so that they can be used again to remove heavy metals from solution. This also results in the removal of the metals from the column in a concentrated form.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: March 20, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Paul J. Jackson, Emmanuel Delhaize, Nigel J. Robinson, Clifford J. Unkefer, Clement Furlong