Patents by Inventor Roy Albert Heath-Coleman

Roy Albert Heath-Coleman 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).

  • Electrodes
    Patent number: 3942517
    Abstract: A pre-gelled electrode for use on a patient's skin comprises a non-conductive gel-container, a conductive gel within the gel-container, a metal contact having a conductive connection with the gel, a cap which engages with the gel container to hermetically close the gel-container and means for controlling the flow of gel onto the skin after removal of the cap and has an improved shelf-life. The metal contact includes a gelatinous substance to prevent corrosion.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: March 9, 1976
    Assignee: Dracard Limited
    Inventors: Leslie Reginald Bowles, Roy Albert Heath-Coleman