Patents by Inventor Robert Louis Alldredge

Robert Louis Alldredge 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).

  • Immobilized branched polyalkyleneimines
    Patent number: 5914044
    Abstract: A solid phase ligand removes metal cations from solution. The ligand is a branched polyalkyleneimine having a molecular weight of at least about 400, covalently bound to an inorganic support.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: June 22, 1999
    Assignee: Metre-International Inc.
    Inventors: Leonard Francis Lindoy, Peter Lewis Eaglen, Robert Louis Alldredge