Patents by Inventor Leslie John Penny

Leslie John Penny 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).

  • Cryosurgical instrument
    Patent number: 5992158
    Abstract: A cryosurgical instrument comprises a cooling tip operable to be cooled by a flow of a cryogenic fluid within the tip; and a fluid transfer chamber having a fluid inlet for receiving cryogenic fluid, a first fluid outlet communicating with the cooling tip for supplying cryogenic fluid to the cooling tip, and a second fluid outlet communicating with an atmospheric air vent.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: November 30, 1999
    Assignee: Spembly Medical Limited
    Inventors: Robert William Goddard, Leslie John Penny
  • Cryosurgical instrument
    Patent number: 5860970
    Abstract: A cryosurgical instrument comprises a metal cooling tip operable to be cooled by a flow of cryogenic fluid within the tip, at least a boiling region of the tip being coated with a heat-insulating coating. The presence of the heat-insulating coating can promote nucleate boiling of the fluid rather than film boiling. Nucleate boiling within the tip provides a greater cooling efficiency of the tip than film boiling.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: January 19, 1999
    Assignee: Spembly Medical Limited
    Inventors: Robert William Goddard, Leslie John Penny