Patents by Inventor Donald E. Rounds

Donald E. Rounds 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).

  • Patent number: 6084322
    Abstract: A magnetically operating device comprises a driven magnet having magnetically opposite poles which are separated, a driver magnet having magnetically opposite poles, and the magnets are mounted for relative movement to maintain one of the driver magnet's poles substantially equidistant from the poles of the driven magnets as the driven magnet moves relative to the driver magnet. A first rotor may mount the driven magnet or magnets for rotation about a first axis, and a second rotor may mount the driver magnet or magnets for rotation about a second axis, and such axes are typically non intersecting and skewed, the rotors being intercoupled. A source of torque such as a motor may be coupled to the second rotor to effect torque input to the second rotor.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: July 4, 2000
    Inventor: Donald E. Rounds
  • Patent number: 5635605
    Abstract: A method is described for identifying, localizing and treating tumors in a patient. The method comprises assaying extracellular fluids, isolated from a patient, for the presence of elevated levels of ring shaped particles (RSP). The assay employs binding labeled RSP specific binding agent to the RSP.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: June 3, 1997
    Assignee: AMDL, Inc.
    Inventors: Robert R. Guerrero, Donald E. Rounds
  • Patent number: 5459035
    Abstract: A method is described for identifying and localizing tumors in a patient. The method comprises assaying extracellular fluids, isolated from a patient, for the presence of elevated levels of ring shaped particles (RSP). The assay employs binding labeled RSP specific binding agent to the RSP.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: October 17, 1995
    Assignee: AMDL, Inc.
    Inventors: Robert R. Guerrero, Donald E. Rounds
  • Patent number: 4786589
    Abstract: An immunoassay procedure utilizing a formazan-labeled primary antibody to detect the presence of an antigen is disclosed. The formazan-labeled antibody is dissolved in a test fluid suspected to containing the antigen. A dipstick having a first section on which primary antibodies are bonded and a second section free of primary antibodies and antigens and blocked to prevent bonding of primary antibodies and antigens is immersed in the test fluid and removed after a select period of time. A difference in color between the first and second sections indicate the presence of the antigen.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: November 22, 1988
    Assignee: Huntington Medical Research Institute
    Inventor: Donald E. Rounds