Patents by Inventor Philip Stephen Howell

Philip Stephen Howell 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).

  • Fuel briquet
    Patent number: D600636
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: September 22, 2009
    Inventor: Philip Stephen Howell