Patents by Inventor Geoffrey Paul Nielsen

Geoffrey Paul Nielsen 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).

  • Dry ice blasting cleaning apparatus
    Patent number: 7033249
    Abstract: The invention is an apparatus used for cleaning equipment including extremely high voltage energized electrical equipment using a dry ice blasting stream as the cleaning agent. The apparatus comprises a cleaning wand and a heating mechanism for impeding the formation of condensation and/or frost on the outer surface of the wand, thereby enabling the wand to operate for prolonged periods of time.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: April 25, 2006
    Assignee: British Columbia Hydro and Power Authority
    Inventors: Bernhard Alexander Spalteholz, Geoffrey Paul Nielsen