Patents by Inventor Silvia J. Villarreal

Silvia J. Villarreal 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).

  • Patent number: D578300
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: October 14, 2008
    Inventor: Silvia J. Villarreal