Patents by Inventor John Purdy

John Purdy 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).

  • Flare stack
    Publication number: 20070059653
    Abstract: A flare stack for burning a vapor having a combustion chamber having a plurality of air intakes for allowing air into the chamber, the air intakes allowing air into the chamber but reducing or blocking the flame from the view of an observer.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 15, 2007
    Inventor: John Purdy