Patents by Inventor James Ligon

James Ligon 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).

  • Ear plugs and method of forming same
    Publication number: 20050109349
    Abstract: A process for forming a foamed thermoplastic earplug, comprising the steps of extruding a foamed body of thermoplastic material; shaping the foamed thermoplastic material; and at least partially separating the resulting shaped material for forming individual earplugs.
    Type: Application
    Filed: December 28, 2004
    Publication date: May 26, 2005
    Inventors: James Ligon, Jeffrey Lewis