Patents by Inventor John Louis Roper

John Louis Roper 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).

  • Snack food
    Patent number: D498342
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: November 16, 2004
    Assignee: Frito-Lay, North America, Inc.
    Inventors: V. N. Mohan Rao, John Louis Roper, William Roman Slovak