Patents by Inventor Bernard F. Sansom

Bernard F. Sansom 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).

  • Sustained release composition
    Patent number: 4880628
    Abstract: A sustained release device which comprises a source of at least one trace chemical element incorporated in a cement and releasable therefrom on contact with an aqueous medium.The trace chemical element is exemplified by selenium, cobalt and iodine and the cement is exemplified by a phosphate cement.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: November 14, 1989
    Assignee: National Research Development Corporation
    Inventors: William M. Allen, Bernard F. Sansom, Alan D. Wilson, Havard J. Prosser, David M. Groffman
  • Sustained release composition
    Patent number: 4661339
    Abstract: A sustained release device which comprises a source of at least one trace chemical element incorporated in a cement and releasable therefrom on contact with an aqueous medium. A preferred cement is copper phosphate cement.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: April 28, 1987
    Assignee: National Research Development Corp.
    Inventors: William M. Allen, Bernard F. Sansom, Alan D. Wilson, Havard J. Prosser, David M. Groffman