Patents by Inventor Maurice Howieson

Maurice Howieson 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).

  • Medical apparatus for generating an ionised gas plasma flame
    Patent number: 6225593
    Abstract: Apparatus (10) for generating an ionized gas plasma flame for use in medicine, particularly for cauterization, is described. The apparatus (10) has an electrical power source (12) providing an alternating voltage at a fixed frequency and a resonant circuit (16, 26) resonant at the fixed frequency connected to the electrical power source (12). A single insulated electrical conductor (30) is connected to the output (18) of the reactive circuit (16) and terminates at a nozzle (36). Conduit means (32) surrounds the electrical conductor (30) along its length and defines a gas-flow channel for supplying substantially inert gas to the nozzle (36), where the gas-flow emerges as a plasma.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: May 1, 2001
    Assignee: Helica Instruments Limited
    Inventors: Maurice Howieson, Peter John Cain