Patents by Inventor Henry Georges Doll

Henry Georges Doll 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).

  • Revolving symmetrical magnet assembly and improved method of blood flow detection
    Patent number: 3994285
    Abstract: A pair of magnets is adapted to be rotated into several positions around the periphery of a limb for the purpose of producing the magnetic field used in blood flow measurements. Electrodes are arranged in pairs located diametrically opposite each other on the limb. The blood flow measurements are obtained by sequentially monitoring each pair in the array of electrodes located on the skin of the limb so as to obtain blood flow measurements at a plurality of circumferential locations on the limb. Each measurement is stored in a memory, with the heartbeat providing the timing reference. The averaged contributions of each of the several arteries in the limb are picked up by the electrodes to provide a valid total measurement of the overall blood flow in the limb.
    Type: Grant
    Filed: December 17, 1974
    Date of Patent: November 30, 1976
    Assignee: Doll Research, Inc.
    Inventor: Henry Georges Doll