Patents by Inventor John Corstorphine

John Corstorphine 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).

  • De-oiling method
    Patent number: 5925194
    Abstract: An apparatus for use in de-oiling components comprises a furnace (10) for receiving components to be de-oiled and pumps (12, 14, 16) for creating a vacuum in the furnace. At least one of the pumps is a liquid ring pump. Oil is utilised to form the liquid ring and the oil is selected to be compatable with or the same as the oil to be removed from the contaminated components.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: July 20, 1999
    Assignee: Consarc Engineering Limited
    Inventors: John Glencross Wilson, John Corstorphine