Patents by Inventor Richard D. Leavitt

Richard D. Leavitt 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).

  • Polymeric delivery of radionuclides and radiopharmaceuticals
    Patent number: 6352682
    Abstract: Locally deposited polymer depots are used as a vehicle for the immobilization and local delivery of a radionuclide or radiopharmaceutical. Radionuclides are incorporated in their elemental forms, as inorganic compounds, or are attached to a larger molecule or incorporated into the polymer, by physical or chemical methods. Ancillary structure may be employed to control the rate of release. Standard radionuclides which have been used for local radiotherapy may be used, such as radionuclides of iodine, iridium, radium, cesium, yttrium or other elements.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: March 5, 2002
    Assignee: Focal, Inc.
    Inventors: Richard D. Leavitt, Luis Z. Avila
  • POLYMERIC DELIVERY OF RADIONUCLIDES AND RADIOPHARMACEUTICALS
    Publication number: 20010006616
    Abstract: Locally deposited polymer depots are used as a vehicle for the immobilization and local delivery of a radionuclide or radiopharmaceutical. Radionuclides are incorporated in their elemental forms, as inorganic compounds, or are attached to a larger molecule or incorporated into the polymer, by physical or chemical methods. Ancillary structure may be employed to control the rate of release. Standard radionuclides which have been used for local radiotherapy may be used, such as radionuclides of iodine, iridium, radium, cesium, yttrium or other elements.
    Type: Application
    Filed: October 2, 1997
    Publication date: July 5, 2001
    Inventors: RICHARD D, LEAVITT, LUIS Z AVILA
  • Method of local radiotherapy by polymerizing a material in vivo to form a hydrogel
    Patent number: 5942209
    Abstract: Locally deposited polymer depots are used as a vehicle for the immobilization and local delivery of a radionuclide or radiopharmaceutical. Radionuclides are incorporated in their elemental forms, as inorganic compounds, or are attached to a larger molecule or incorporated into the polymer, by physical or chemical methods. Ancillary structure may be employed to control the rate of release. Standard radionuclides which have been used for local radiotherapy may be used, such as radionuclides of iodine, iridium, radium, cesium, yttrium or other elements.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: August 24, 1999
    Assignee: Focal, Inc.
    Inventors: Richard D. Leavitt, Luis Z. Avila