Patents by Inventor Leonard Francis Lindoy

Leonard Francis Lindoy 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).

  • Composition and method for selectively removing metal ions from an aqueous solution
    Patent number: 6139752
    Abstract: A composition of matter is provided in which a phosphonic acid or phosphonic acid ester group is linked through a thioether residue to a silicon atom which is further covalently bonded to a solid inorganic support. The compositions can be employed to selectively separate metal ions having high cationic charge from a solution containing lower-charged cations, and also to selectively separate highly charged cations having a relatively high charge density from cations having the same charge, but a lower charge density.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: October 31, 2000
    Assignee: Zeneca Limited
    Inventors: Leonard Francis Lindoy, Peter Anthony Tasker, Ian Murray Atkinson, Derek Thorp
  • 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